@article{1077378794,
author = {Amir-Mo\'ez, A. R. and Johnston, G. E.},
title = {Extreme properties of products of quadratic forms},
journal = {Duke Math. J.},
volume = {37},
number = {1},
year = {1970},
pages = { 61-65},
language = {en},
url = {http://dml.mathdoc.fr/item/1077378794}
}
Amir-Moéz, A. R.; Johnston, G. E. Extreme properties of products of quadratic forms. Duke Math. J., Tome 37 (1970) no. 1, pp. 61-65. http://gdmltest.u-ga.fr/item/1077378794/