@article{KUTGS_1978_10_a6,
     author = {A. S. Podkovyrin},
     title = {Theory of analytic surfaces of a biaffine {space.~II}},
     journal = {Trudy Geometricheskogo Seminara},
     pages = {65--77},
     publisher = {mathdoc},
     volume = {10},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUTGS_1978_10_a6/}
}