@article{1077490203,
author = {Mac Lane, Saunders},
title = {A structural characterization of planar combinatorial graphs},
journal = {Duke Math. J.},
volume = {3},
number = {1},
year = {1937},
pages = { 460-472},
language = {en},
url = {http://dml.mathdoc.fr/item/1077490203}
}
Mac Lane, Saunders. A structural characterization of planar combinatorial graphs. Duke Math. J., Tome 3 (1937) no. 1, pp. 460-472. http://gdmltest.u-ga.fr/item/1077490203/