%0 Journal Article %T Greetings to P.\,S.~Aleksandrov on his birthday %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1981 %V 36 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1981_36_3_a22/ %G ru %F RM_1981_36_3_a22