Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{PORMA_1967__26_3_115040, author = {Kambayashi, T.}, title = {A convergence criterion for multiple ratios}, journal = {Portugaliae mathematica}, pages = {375--379}, publisher = {mathdoc}, volume = {26}, number = {3}, year = {1967}, mrnumber = {0256258}, zbl = {0212.36903}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1967__26_3_115040/} }
Kambayashi, T. A convergence criterion for multiple ratios. Portugaliae mathematica, Tome 26 (1967) no. 3, pp. 375-379. http://geodesic.mathdoc.fr/item/PORMA_1967__26_3_115040/