@article{ISU_2013_13_1_a20,
     author = {V. P. Sklyarov},
     title = {The {Condition} of {N.\,P.~Kuptsov} $s$-regularity},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {84--87},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2013_13_1_a20/}
}