@article{1183495751, author = {Carpenter, A. F.}, title = {A triad of ruled surfaces defined by reciprocal polars}, journal = {Bull. Amer. Math. Soc.}, volume = {38}, number = {12}, year = {1932}, pages = { 95-100}, language = {en}, url = {http://dml.mathdoc.fr/item/1183495751} }
Carpenter, A. F. A triad of ruled surfaces defined by reciprocal polars. Bull. Amer. Math. Soc., Tome 38 (1932) no. 12, pp. 95-100. http://gdmltest.u-ga.fr/item/1183495751/