%0 Journal Article %A P. E. Markov %A E. V. Shkryl' %T Rigidity of piecewise convex surfaces of torus type %J Sbornik. Mathematics %D 2000 %P 583-617 %V 191 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2000_191_4_a5/ %G en %F SM_2000_191_4_a5