TY  - JOUR
AU  - Waller, Derek A.
TI  - Optimisation of quadratic forms associated with graphs
JO  - Glasgow mathematical journal
PY  - 1977
SP  - 79
EP  - 85
VL  - 18
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500003062/
DO  - 10.1017/S0017089500003062
ID  - 10_1017_S0017089500003062
ER  -