@article{1183511146, author = {Duffin, R. J.}, title = {Nonlinear networks. IIa}, journal = {Bull. Amer. Math. Soc.}, volume = {53}, number = {12}, year = {1947}, pages = { 963-971}, language = {en}, url = {http://dml.mathdoc.fr/item/1183511146} }
Duffin, R. J. Nonlinear networks. IIa. Bull. Amer. Math. Soc., Tome 53 (1947) no. 12, pp. 963-971. http://gdmltest.u-ga.fr/item/1183511146/