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+@article{andes_2021,
+  author  = {Cui, Hantao and Li, Fangxing and Tomsovic, Kevin},
+  journal = {IEEE Transactions on Power Systems},
+  title   = {Hybrid Symbolic-Numeric Framework for Power System Modeling and Analysis},
+  year    = {2021},
+  volume  = {36},
+  number  = {2},
+  pages   = {1373-1384},
+  doi     = {10.1109/TPWRS.2020.3017019}
+}