%0 Journal Article %A L. M. Kurshin %T Cross-sectional shape of the rod with maximum torsional rigidity %J Doklady Akademii Nauk %D 1975 %P 585-588 %V 223 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1975_223_3_a18/ %G ru %F DAN_1975_223_3_a18