Some classes of matrix transforms of summability fields of Cesaro and Riesz methods
Aasma, Ants
Conference on Summability and Applications 2011 : At Istanbul Commerce University Conference Hall, May 12-13, 2011 : programme and book of abstracts
2011
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p. 30
https://www.researchgate.net/publication/268007500_Some_classes_of_matrix_transforms_of_summability_domains_of_normal_matrices