@article{1183497454, author = {Clarkson, J. M.}, title = {An involutorial line transformation}, journal = {Bull. Amer. Math. Soc.}, volume = {40}, number = {12}, year = {1934}, pages = { 421-424}, language = {en}, url = {http://dml.mathdoc.fr/item/1183497454} }
Clarkson, J. M. An involutorial line transformation. Bull. Amer. Math. Soc., Tome 40 (1934) no. 12, pp. 421-424. http://gdmltest.u-ga.fr/item/1183497454/