@article{1183529855,
author = {Anshel, Michael and Clay, James R.},
title = {Planarity in algebraic systems},
journal = {Bull. Amer. Math. Soc.},
volume = {74},
number = {6},
year = {1968},
pages = { 746-748},
language = {en},
url = {http://dml.mathdoc.fr/item/1183529855}
}
Anshel, Michael; Clay, James R. Planarity in algebraic systems. Bull. Amer. Math. Soc., Tome 74 (1968) no. 6, pp. 746-748. http://gdmltest.u-ga.fr/item/1183529855/