@article{DE_1970_6_11_a1,
     author = {N. A. Bobylev and M. A. Krasnosel'skii},
     title = {A functionalization of the parameter and a theorem of relatedness for autonomous systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1946--1952},
     publisher = {mathdoc},
     volume = {6},
     number = {11},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_11_a1/}
}