@article{01621371,
title = {On the representation of numbers by the direct sums of some quaternary quadratic forms.},
journal = {Georgian Mathematical Journal},
volume = {8},
year = {2001},
pages = {87-95},
zbl = {0972.11023},
language = {en},
url = {http://dml.mathdoc.fr/item/01621371}
}
Kachakhidze, N. On the representation of numbers by the direct sums of some quaternary quadratic forms.. Georgian Mathematical Journal, Tome 8 (2001) pp. 87-95. http://gdmltest.u-ga.fr/item/01621371/