@article{DE_1986_22_10_a3,
     author = {E. P. Kubishkin},
     title = {Bifurcation of periodic solutions in the critical case of two pairs of purely imaginary roots in the presence of higher resonances},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1693--1697},
     publisher = {mathdoc},
     volume = {22},
     number = {10},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1986_22_10_a3/}
}