%0 Journal Article
%A Waller, Derek A.
%T Optimisation of quadratic forms associated with graphs
%J Glasgow mathematical journal
%D 1977
%P 79-85
%V 18
%N 1
%U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500003062/
%R 10.1017/S0017089500003062
%F 10_1017_S0017089500003062