@misc{DE_2001_37_6_a18,
     title = {Seminar on {Qualitative} {Theory} of {Differential} {Equations} at {Moscow} {State} {University}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {847--860},
     publisher = {mathdoc},
     volume = {37},
     number = {6},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2001_37_6_a18/}
}