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@article{GMJ_1999__6_1_48218, author = {Nadibaidze, G.}, title = {On the absolute summability of series with respect to block-orthonormal systems.}, journal = {Georgian Mathematical Journal}, pages = {83--90}, publisher = {mathdoc}, volume = {6}, number = {1}, year = {1999}, zbl = {0920.42023}, language = {en}, url = {http://geodesic.mathdoc.fr/item/GMJ_1999__6_1_48218/} }
Nadibaidze, G. On the absolute summability of series with respect to block-orthonormal systems.. Georgian Mathematical Journal, Tome 6 (1999) no. 1, pp. 83-90. http://geodesic.mathdoc.fr/item/GMJ_1999__6_1_48218/