%0 Journal Article
%A Helfenstein, H. G.
%A Katz, E.
%T Intermediate flexibility of surfaces
%J Compositio Mathematica
%D 1972
%P 71-78
%V 25
%N 1
%I Wolters-Noordhoff Publishing
%U http://www.numdam.org/item/CM_1972__25_1_71_0/
%G en
%F CM_1972__25_1_71_0