diff --git a/man/CIcdfplot.Rd b/man/CIcdfplot.Rd
index 335a1ad3..42f320ef 100644
--- a/man/CIcdfplot.Rd
+++ b/man/CIcdfplot.Rd
@@ -92,7 +92,7 @@ CIcdfplot(b, CI.output, CI.type = "two.sided", CI.level = 0.95, CI.col = "red",
 \references{
 Delignette-Muller ML and Dutang C (2015), 
 \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 
 }
 
diff --git a/man/Surv2fitdistcens.Rd b/man/Surv2fitdistcens.Rd
index 57b3e79d..98b92642 100644
--- a/man/Surv2fitdistcens.Rd
+++ b/man/Surv2fitdistcens.Rd
@@ -56,7 +56,7 @@ Surv2fitdistcens(time, time2, event,
 
 \references{ 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 }
 
 
diff --git a/man/bootdist.Rd b/man/bootdist.Rd
index e6e160c6..195acc1d 100644
--- a/man/bootdist.Rd
+++ b/man/bootdist.Rd
@@ -158,7 +158,7 @@ Cullen AC and Frey HC (1999), \emph{Probabilistic techniques in exposure assessm
 Plenum Press, USA, pp. 181-241.
 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 }
 
 
diff --git a/man/bootdistcens.Rd b/man/bootdistcens.Rd
index 0c863d93..30f5b806 100644
--- a/man/bootdistcens.Rd
+++ b/man/bootdistcens.Rd
@@ -125,7 +125,7 @@ Cullen AC and Frey HC (1999), \emph{Probabilistic techniques in exposure assessm
 Plenum Press, USA, pp. 181-241.
 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 }
 
 
diff --git a/man/descdist.Rd b/man/descdist.Rd
index 92271e9d..f2247138 100644
--- a/man/descdist.Rd
+++ b/man/descdist.Rd
@@ -81,13 +81,13 @@ Cullen AC and Frey HC (1999), \emph{Probabilistic techniques in exposure assessm
 Plenum Press, USA, pp. 81-159.
 
 Evans M, Hastings N and Peacock B (2000), \emph{Statistical distributions}.
-John Wiley and Sons Inc.
+John Wiley and Sons Inc, \doi{10.1002/9780470627242}.
 
 Sokal RR and Rohlf FJ (1995), \emph{Biometry}.
 W.H. Freeman and Company, USA, pp. 111-115.
 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 
 }
 
diff --git a/man/detectbound.Rd b/man/detectbound.Rd
index 1133e228..fd496c63 100644
--- a/man/detectbound.Rd
+++ b/man/detectbound.Rd
@@ -37,7 +37,7 @@ detectbound(distname, vstart, obs, fix.arg=NULL, echo=FALSE)
 
 \references{ 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 }
 
 \author{ 
diff --git a/man/fitdist.Rd b/man/fitdist.Rd
index 8764783f..439673d4 100644
--- a/man/fitdist.Rd
+++ b/man/fitdist.Rd
@@ -286,13 +286,13 @@ Cullen AC and Frey HC (1999), \emph{Probabilistic techniques in exposure assessm
 Plenum Press, USA, pp. 81-155.
 
 Venables WN and Ripley BD (2002), \emph{Modern applied statistics with S}.
-Springer, New York, pp. 435-446.
+Springer, New York, pp. 435-446, \doi{10.1007/978-0-387-21706-2}.
 
 Vose D (2000), \emph{Risk analysis, a quantitative guide}.
 John Wiley & Sons Ltd, Chischester, England, pp. 99-143.
 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 
 }
 
diff --git a/man/fitdistcens.Rd b/man/fitdistcens.Rd
index 120dde34..53a17960 100644
--- a/man/fitdistcens.Rd
+++ b/man/fitdistcens.Rd
@@ -179,10 +179,10 @@ otherwise only a sample subset is returned.}
 
 \references{ 
 Venables WN and Ripley BD (2002), \emph{Modern applied statistics with S}.
-Springer, New York, pp. 435-446.
+Springer, New York, pp. 435-446, \doi{10.1007/978-0-387-21706-2}.
 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 }
 
 \author{ 
diff --git a/man/gofstat.Rd b/man/gofstat.Rd
index fb76242a..3ddab90e 100644
--- a/man/gofstat.Rd
+++ b/man/gofstat.Rd
@@ -126,13 +126,13 @@ Stephens MA (1986), \emph{Tests based on edf statistics}. In Goodness-of-fit tec
 Stephens MA, eds), Marcel Dekker, New York, pp. 97-194.
 
 Venables WN and Ripley BD (2002), \emph{Modern applied statistics with S}.
-Springer, New York, pp. 435-446.
+Springer, New York, pp. 435-446, \doi{10.1007/978-0-387-21706-2}.
 
 Vose D (2000), \emph{Risk analysis, a quantitative guide}.
 John Wiley & Sons Ltd, Chischester, England, pp. 99-143.
 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 
 }
 
diff --git a/man/graphcomp.Rd b/man/graphcomp.Rd
index a3bef5bd..31fb4798 100644
--- a/man/graphcomp.Rd
+++ b/man/graphcomp.Rd
@@ -162,7 +162,7 @@ ppcomp(ft, xlim, ylim, xlogscale = FALSE, ylogscale = FALSE, main, xlab, ylab,
 \references{
 Delignette-Muller ML and Dutang C (2015), 
 \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 }
 
 \author{ 
diff --git a/man/logLik-plot.Rd b/man/logLik-plot.Rd
index 6b1856c7..2a5c99c0 100644
--- a/man/logLik-plot.Rd
+++ b/man/logLik-plot.Rd
@@ -57,7 +57,7 @@ parameter is of 2 standard error around the mle estimate but this range can be e
 \references{
 Delignette-Muller ML and Dutang C (2015), 
 \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 
 }
 
diff --git a/man/logLik-surface.Rd b/man/logLik-surface.Rd
index a306223f..a2e5736a 100644
--- a/man/logLik-surface.Rd
+++ b/man/logLik-surface.Rd
@@ -68,7 +68,7 @@ varying parameter and other parameters fixed.
 \references{
 Delignette-Muller ML and Dutang C (2015), 
 \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 
 }
 
diff --git a/man/mgedist.Rd b/man/mgedist.Rd
index bf5c5902..9b010ed8 100644
--- a/man/mgedist.Rd
+++ b/man/mgedist.Rd
@@ -110,13 +110,14 @@ mgedist(data, distr, gof = "CvM", start = NULL, fix.arg = NULL, optim.method = "
 
 \references{
 Luceno A (2006), \emph{Fitting the generalized Pareto distribution to data using
-maximum goodness-of-fit estimators}. Computational Statistics and Data Analysis, 51, 904-917.
+maximum goodness-of-fit estimators}. Computational Statistics and Data Analysis, 51, 904-917,
+\doi{10.1016/j.csda.2005.09.011}.
 
 Stephens MA (1986), \emph{Tests based on edf statistics}. In Goodness-of-fit techniques (D'Agostino RB and
 Stephens MA, eds), Marcel Dekker, New York, pp. 97-194.
 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 }
 
 \author{ 
diff --git a/man/mledist.Rd b/man/mledist.Rd
index 41bf3e4e..253a4024 100644
--- a/man/mledist.Rd
+++ b/man/mledist.Rd
@@ -182,10 +182,10 @@ mledist(data, distr, start = NULL, fix.arg = NULL, optim.method = "default",
 \references{ 
 
 Venables WN and Ripley BD (2002), \emph{Modern applied statistics with S}.
-Springer, New York, pp. 435-446.
+Springer, New York, pp. 435-446, \doi{10.1007/978-0-387-21706-2}.
 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 }
 
 
diff --git a/man/mmedist.Rd b/man/mmedist.Rd
index e4be1802..70270c58 100644
--- a/man/mmedist.Rd
+++ b/man/mmedist.Rd
@@ -149,13 +149,14 @@ I. Ibragimov and R. Has'minskii (1981),
 \emph{Statistical Estimation - Asymptotic Theory}, Springer-Verlag, 
 \doi{10.1007/978-1-4899-0027-2}
 
-Evans M, Hastings N and Peacock B (2000), \emph{Statistical distributions}. John Wiley and Sons Inc.
+Evans M, Hastings N and Peacock B (2000), \emph{Statistical distributions}. John Wiley and Sons Inc,
+\doi{10.1002/9780470627242}.
 
 Vose D (2000), \emph{Risk analysis, a quantitative guide}.
 John Wiley & Sons Ltd, Chischester, England, pp. 99-143.
 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 }
 
 
diff --git a/man/msedist.Rd b/man/msedist.Rd
index b0d86ff8..3b725656 100644
--- a/man/msedist.Rd
+++ b/man/msedist.Rd
@@ -152,10 +152,12 @@ msedist(data, distr, phidiv="KL", power.phidiv=NULL, start = NULL, fix.arg = NUL
 \references{
 
 Anatolyev, S., and Kosenok, G. (2005). \emph{An alternative to maximum likelihood
-based on spacings}. Econometric Theory, 21(2), 472-476. 
+based on spacings}. Econometric Theory, 21(2), 472-476,
+\doi{10.1017/S0266466605050255}. 
 
 Cheng, R.C.H. and N.A.K. Amin (1983) \emph{Estimating parameters in continuous univariate 
-distributions with a shifted origin}. Journal of the Royal Statistical Society Series B 45, 394-403.
+distributions with a shifted origin}. Journal of the Royal Statistical Society Series B 45, 394-403,
+\doi{10.1111/j.2517-6161.1983.tb01268.x}.
 
 Ranneby, B. (1984) \emph{The maximum spacing method: An estimation method related to 
 the maximum likelihood method}. Scandinavian Journal of Statistics 11, 93-112.
diff --git a/man/plotdist.Rd b/man/plotdist.Rd
index cb675102..0911dde3 100644
--- a/man/plotdist.Rd
+++ b/man/plotdist.Rd
@@ -68,7 +68,7 @@ Cullen AC and Frey HC (1999), \emph{Probabilistic techniques in exposure assessm
 Plenum Press, USA, pp. 81-155.
 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 
 }
 
diff --git a/man/plotdistcens.Rd b/man/plotdistcens.Rd
index d1213733..6372dea5 100644
--- a/man/plotdistcens.Rd
+++ b/man/plotdistcens.Rd
@@ -101,18 +101,22 @@ plotdistcens(censdata, distr, para, leftNA = -Inf, rightNA = Inf,
 
 \references{ 
 Turnbull BW (1974), \emph{Nonparametric estimation of a survivorship function with doubly
-censored data}. Journal of American Statistical Association, 69, 169-173.
+censored data}. Journal of American Statistical Association, 69, 169-173,
+\doi{10.2307/2285518}.
 
 Wang Y (2008), \emph{Dimension-reduced nonparametric maximum likelihood computation
-for interval-censored data}. Computational Statistics & Data Analysis, 52, 2388-2402.
+for interval-censored data}. Computational Statistics & Data Analysis, 52, 2388-2402,
+\doi{10.1016/j.csda.2007.10.018}.
 
 Wang Y and Taylor SM (2013), \emph{Efficient computation of nonparametric survival
-functions via a hierarchical mixture formulation}. Statistics and Computing, 23, 713-725.
+functions via a hierarchical mixture formulation}. Statistics and Computing, 23, 713-725,
+\doi{10.1007/s11222-012-9341-9}.
 
-Wang, Y., & Fani, S. (2018), \emph{Nonparametric maximum likelihood computation of a U-shaped hazard function}. Statistics and Computing, 28(1), 187-200.
+Wang, Y., & Fani, S. (2018), \emph{Nonparametric maximum likelihood computation of a U-shaped hazard function}. Statistics and Computing, 28(1), 187-200,
+\doi{10.1007/s11222-017-9724-z}.
 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 
 }
 
diff --git a/man/prefit.Rd b/man/prefit.Rd
index 812c738f..fc857b71 100644
--- a/man/prefit.Rd
+++ b/man/prefit.Rd
@@ -90,7 +90,7 @@ and then we transform them back to original parameter value.
 
 \references{ 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 
 }
 
diff --git a/man/qmedist.Rd b/man/qmedist.Rd
index 006dfbfc..ab7edbc7 100644
--- a/man/qmedist.Rd
+++ b/man/qmedist.Rd
@@ -120,11 +120,12 @@ qmedist(data, distr, probs, start = NULL, fix.arg = NULL, qtype = 7,
 \references{
 Klugman SA, Panjer HH and Willmot GE (2012),
 \emph{Loss Models: From Data to Decissions}, 4th edition.
-Wiley Series in Statistics for Finance, Business and Economics, p. 253.
+Wiley Series in Statistics for Finance, Business and Economics, p. 253,
+\doi{10.1198/tech.2006.s409}.
 
 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 
 
 }
diff --git a/man/quantile.Rd b/man/quantile.Rd
index 7ab1201a..450d151d 100644
--- a/man/quantile.Rd
+++ b/man/quantile.Rd
@@ -93,7 +93,7 @@
 \references{
 
 Delignette-Muller ML and Dutang C (2015), \emph{fitdistrplus: An R Package for Fitting Distributions}.
-Journal of Statistical Software, 64(4), 1-34.
+Journal of Statistical Software, 64(4), 1-34, \doi{https://doi.org/10.18637/jss.v064.i04}.
 
 }