@article{1077468485, author = {Elgot, Calvin C. and Wright, Jesse B.}, title = {Series-parallel graphs and lattices}, journal = {Duke Math. J.}, volume = {26}, number = {1}, year = {1959}, pages = { 325-338}, language = {en}, url = {http://dml.mathdoc.fr/item/1077468485} }
Elgot, Calvin C.; Wright, Jesse B. Series-parallel graphs and lattices. Duke Math. J., Tome 26 (1959) no. 1, pp. 325-338. http://gdmltest.u-ga.fr/item/1077468485/