@article{1183494666,
author = {Miller, G. A.},
title = {Groups generated by two operators whose squares are invariant},
journal = {Bull. Amer. Math. Soc.},
volume = {37},
number = {12},
year = {1931},
pages = { 270-275},
language = {en},
url = {http://dml.mathdoc.fr/item/1183494666}
}
Miller, G. A. Groups generated by two operators whose squares are invariant. Bull. Amer. Math. Soc., Tome 37 (1931) no. 12, pp. 270-275. http://gdmltest.u-ga.fr/item/1183494666/