@article{bwmeta1.element.bwnjournal-article-aav29i1p1bwm,
author = {Ponomarev, Paul},
title = {Arithmetic of quaternary quadratic forms},
journal = {Acta Arithmetica},
volume = {31},
year = {1976},
pages = {1-48},
zbl = {0321.10023},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav29i1p1bwm}
}
Ponomarev, Paul. Arithmetic of quaternary quadratic forms. Acta Arithmetica, Tome 31 (1976) pp. 1-48. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav29i1p1bwm/