%0 Journal Article %A M. E. Lerner %T Maximum modulus principles for hyperbolic equations and systems of equations in nonclassical domains %J Differencialʹnye uravneniâ %D 1986 %P 848-858 %V 22 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1986_22_5_a14/ %G ru %F DE_1986_22_5_a14