%0 Journal Article %A A. V. Lipnitskii %T Millionshchikov's Solution of Erugin's Problem %J Differencialʹnye uravneniâ %D 2000 %P 1615-1620 %V 36 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2000_36_12_a3/ %G ru %F DE_2000_36_12_a3