@article{01049440,
title = {Ste\v ckin inequalities for summability methods.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {20},
year = {1997},
pages = {93-100},
doi = {10.1155/S0161171297000136},
zbl = {0878.41011},
language = {en},
url = {http://dml.mathdoc.fr/item/01049440}
}
Cao, Jiading. Stečkin inequalities for summability methods.. International Journal of Mathematics and Mathematical Sciences, Tome 20 (1997) pp. 93-100. doi : 10.1155/S0161171297000136. http://gdmltest.u-ga.fr/item/01049440/