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@article{MZ_1969__111_171185, author = {B. Kuttner and B. Thorpe}, title = {On the {Strong} {N\"orlund} {Summability} of a {Cauchy} {Product} {Series.}}, journal = {Mathematische Zeitschrift}, pages = {69--86}, publisher = {mathdoc}, volume = {111}, year = {1969}, zbl = {0176.01502}, url = {http://geodesic.mathdoc.fr/item/MZ_1969__111_171185/} }
B. Kuttner; B. Thorpe. On the Strong Nörlund Summability of a Cauchy Product Series.. Mathematische Zeitschrift, Tome 111 (1969), pp. 69-86. http://geodesic.mathdoc.fr/item/MZ_1969__111_171185/