@article{DE_2000_36_1_a3,
     author = {V. V. Basov and Yu. N. Bibikov},
     title = {Bifurcation of an equilibrium for a system of differential equations in the critical case of two pure imaginary and two zero roots of the characteristic equation: {I}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {26--32},
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2000_36_1_a3/}
}