• [1] Ralph Palmer Agnew, Cores of Complex Sequences and of Their Transforms, Amer. J. Math. 61 (1939), no. 1, 178–186. MR 1507948, https://doi.org/10.2307/2371398
• [2] Henry G. Barone, Limit points of sequences and their transforms by methods of summability, Duke Math. J. 5 (1939), 740–752. MR 1323
• [3] Richard G. Cooke, Infinite Matrices and Sequence Spaces, Macmillan & Co., Ltd., London, 1950. MR 0040451
• [4] Konrad Knopp, Zur Theorie der Limitierungsverfahren, Math. Z. 31 (1930), no. 1, 97–127 (German). MR 1545100, https://doi.org/10.1007/BF01246399

Bibliography

[1]

R. P. Agnew, Cores of complex sequences and of their transforms, Amer. J. Math. 61 (1939), 178-189. MR 1507948

[2]

H. G. Barone, Limit points of sequences and their transforms by methods of summobility, Duke Math. J. 5 (1939), 740-752. MR 0001323 (1:218a)

[3]

R. G. Cooke, Infinite matrices and sequence spaces, Macmillan, New York, 1950. MR 0040451 (12:694d)

[4]

Konrad Knopp, Zur Theorie der Limitierverfahren. I, II, Math. Z. 31 (1930), 97-127, 276-305. MR 1545100