@article{1077490033,
author = {Ore, Oystein},
title = {Structures and group theory. I},
journal = {Duke Math. J.},
volume = {3},
number = {1},
year = {1937},
pages = { 149-174},
language = {en},
url = {http://dml.mathdoc.fr/item/1077490033}
}
Ore, Oystein. Structures and group theory. I. Duke Math. J., Tome 3 (1937) no. 1, pp. 149-174. http://gdmltest.u-ga.fr/item/1077490033/