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@article{MAN_1923__89_158999, author = {P.O. Upadhyaya}, title = {On a formula of transformation.}, journal = {Mathematische Annalen}, pages = {157--159}, publisher = {mathdoc}, volume = {89}, year = {1923}, zbl = {49.0718.01}, url = {http://geodesic.mathdoc.fr/item/MAN_1923__89_158999/} }
P.O. Upadhyaya. On a formula of transformation.. Mathematische Annalen, Tome 89 (1923), pp. 157-159. http://geodesic.mathdoc.fr/item/MAN_1923__89_158999/