@article{bwmeta1.element.bwnjournal-article-aav10i4p423bwm,
author = {Birch, B. and Lewis, D.},
title = {Systems of three quadratic forms},
journal = {Acta Arithmetica},
volume = {11},
year = {1965},
pages = {423-442},
zbl = {0152.01503},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav10i4p423bwm}
}
Birch, B.; Lewis, D. Systems of three quadratic forms. Acta Arithmetica, Tome 11 (1965) pp. 423-442. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav10i4p423bwm/