@article{GDZPPN002405504, title = {Matrix Transformations of Almost Convergent Sequences.}, journal = {Mathematische Zeitschrift}, volume = {111}, year = {1969}, pages = {321-325}, zbl = {0181.33501}, url = {http://dml.mathdoc.fr/item/GDZPPN002405504} }
Schaefer, Paul. Matrix Transformations of Almost Convergent Sequences.. Mathematische Zeitschrift, Tome 111 (1969) pp. 321-325. http://gdmltest.u-ga.fr/item/GDZPPN002405504/