%0 Journal Article %A A. D. Aleksandrov %A V. V. Strel'cov %T The isoperimetric problem and extimates of the length of a~curve on a~surface %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1965 %P 67-80 %V 76 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1965_76_a5/ %G ru %F TM_1965_76_a5