@article{1183418885,
author = {Carstens, R. L.},
title = {A definition of quaternions by independent postulates},
journal = {Bull. Amer. Math. Soc.},
volume = {13},
number = {3},
year = {1906},
pages = { 392-394},
language = {en},
url = {http://dml.mathdoc.fr/item/1183418885}
}
Carstens, R. L. A definition of quaternions by independent postulates. Bull. Amer. Math. Soc., Tome 13 (1906) no. 3, pp. 392-394. http://gdmltest.u-ga.fr/item/1183418885/