@article{DE_1991_27_11_a17,
     author = {V. P. Nozdracheva},
     title = {Bifurcations of a singular cone in two cases},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1984--1986},
     publisher = {mathdoc},
     volume = {27},
     number = {11},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_11_a17/}
}