@misc{DE_2004_40_11_a17,
     title = {``Pontryagin {Readings-XV''} at {Voronezh} spring mathematical school {``Modern} methods in qualitative theory of boundary value problems''},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1579--1580},
     publisher = {mathdoc},
     volume = {40},
     number = {11},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2004_40_11_a17/}
}