@article{1102735070, author = {Freedman, A. R. and Sember, J. J.}, title = {Densities and summability.}, journal = {Pacific J. Math.}, volume = {97}, number = {2}, year = {1981}, pages = { 293-305}, language = {en}, url = {http://dml.mathdoc.fr/item/1102735070} }
Freedman, A. R.; Sember, J. J. Densities and summability.. Pacific J. Math., Tome 97 (1981) no. 2, pp. 293-305. http://gdmltest.u-ga.fr/item/1102735070/