@article{DE_1981_17_2_a20,
     author = {Yu. B. Rusak},
     title = {Problem of the points of bifurcation in the case of several parameters},
     journal = {Differencialʹnye uravneni\^a},
     pages = {383--386},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1981_17_2_a20/}
}