@article{1183523309,
author = {Lyndon, R. C.},
title = {Properties preserved under algebraic constructions},
journal = {Bull. Amer. Math. Soc.},
volume = {65},
number = {6},
year = {1959},
pages = { 287-299},
language = {en},
url = {http://dml.mathdoc.fr/item/1183523309}
}
Lyndon, R. C. Properties preserved under algebraic constructions. Bull. Amer. Math. Soc., Tome 65 (1959) no. 6, pp. 287-299. http://gdmltest.u-ga.fr/item/1183523309/