@article{1183498919, author = {Chambers, L. H.}, title = {On $\left( {2,\,2} \right)$ planar correspondences}, journal = {Bull. Amer. Math. Soc.}, volume = {42}, number = {12}, year = {1936}, pages = { 382-388}, language = {en}, url = {http://dml.mathdoc.fr/item/1183498919} }
Chambers, L. H. On $\left( {2,\,2} \right)$ planar correspondences. Bull. Amer. Math. Soc., Tome 42 (1936) no. 12, pp. 382-388. http://gdmltest.u-ga.fr/item/1183498919/