@article{GDZPPN001177214, title = {Minimization of Extended Quadratic Functions.}, journal = {Numerische Mathematik}, volume = {39}, year = {1982}, pages = {157-162}, zbl = {0491.65038}, url = {http://dml.mathdoc.fr/item/GDZPPN001177214} }
Shirey, J.E. Minimization of Extended Quadratic Functions.. Numerische Mathematik, Tome 39 (1982) pp. 157-162. http://gdmltest.u-ga.fr/item/GDZPPN001177214/