%0 Journal Article
%A Beyer, W. A.
%T Inner product-magnitude-preserving transformations in complex Hilbert spaces
%J Compositio Mathematica
%D 1969
%P 137-142
%V 21
%N 2
%I Wolters-Noordhoff Publishing
%U http://archive.numdam.org/item/CM_1969__21_2_137_0/
%G en
%F CM_1969__21_2_137_0