%0 Journal Article
%A Franklin, S. P.
%T Natural covers
%J Compositio Mathematica
%D 1969
%P 253-261
%V 21
%N 3
%I Wolters-Noordhoff Publishing
%U http://www.numdam.org/item/CM_1969__21_3_253_0/
%G en
%F CM_1969__21_3_253_0