%0 Journal Article %A V. A. Zalgaller %A O. A. Ladyzhenskaya %A Yu. G. Reshetnyak %T On the 75th birthday of Academician A.~D.~Aleksandrov %J Matematičeskie trudy %D 1987 %P 3-15 %V 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/MT_1987_9_a0/ %G ru %F MT_1987_9_a0