@article{DE_1985_21_5_a28,
     author = {A. D. Myshkis},
     title = {Concerning the inversion of {Kneser's} theorem on the cross section of an integral funnel},
     journal = {Differencialʹnye uravneni\^a},
     pages = {908--909},
     year = {1985},
     volume = {21},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1985_21_5_a28/}
}