@article{SM_2020_211_3_a3,
     author = {A. M. Shelekhov},
     title = {A~generalized theorem on curvilinear three-web boundaries and its applications},
     journal = {Sbornik. Mathematics},
     pages = {422--454},
     publisher = {mathdoc},
     volume = {211},
     number = {3},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2020_211_3_a3/}
}