@article{SM_2021_212_9_a5,
     author = {Vik. S. Kulikov},
     title = {Rigid germs of finite morphisms of~smooth surfaces and rational {Belyi} pairs},
     journal = {Sbornik. Mathematics},
     pages = {1304--1328},
     publisher = {mathdoc},
     volume = {212},
     number = {9},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2021_212_9_a5/}
}