@misc{DE_2006_42_11_a13,
     title = {On the seminar on qualitative theory of differential equations at {Moscow} {State} {University}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1571--1580},
     year = {2006},
     volume = {42},
     number = {11},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2006_42_11_a13/}
}