@article{1183485570, author = {Bray, H. E.}, title = {Proof of a formula for an area}, journal = {Bull. Amer. Math. Soc.}, volume = {29}, number = {10}, year = {1923}, pages = { 264-270}, language = {en}, url = {http://dml.mathdoc.fr/item/1183485570} }
Bray, H. E. Proof of a formula for an area. Bull. Amer. Math. Soc., Tome 29 (1923) no. 10, pp. 264-270. http://gdmltest.u-ga.fr/item/1183485570/