@article{1183493098,
author = {Dickson, L. E.},
title = {The forms $ax^2 + by^2 + cz^2 $ which represent all integers},
journal = {Bull. Amer. Math. Soc.},
volume = {35},
number = {6},
year = {1929},
pages = { 55-59},
language = {en},
url = {http://dml.mathdoc.fr/item/1183493098}
}
Dickson, L. E. The forms $ax^2 + by^2 + cz^2 $ which represent all integers. Bull. Amer. Math. Soc., Tome 35 (1929) no. 6, pp. 55-59. http://gdmltest.u-ga.fr/item/1183493098/