%0 Journal Article %A V. I. Zhegalov %A E. A. Utkina %T On a Fourth-Order Partial Differential Equation with Three Independent Variables %J Differencialʹnye uravneniâ %D 2002 %P 93-97 %V 38 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2002_38_1_a13/ %G ru %F DE_2002_38_1_a13