@article{DE_1971_7_11_a25,
     author = {L. P. Cherenkova},
     title = {The construction of the switching line in the case of an isochronous family of glued solutions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2117--2119},
     publisher = {mathdoc},
     volume = {7},
     number = {11},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1971_7_11_a25/}
}