@article{01779147, title = {Rate preservation of double sequences under }, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {30}, year = {2002}, pages = {637-643}, doi = {10.1155/S0161171202005331}, zbl = {0992.40004}, language = {en}, url = {http://dml.mathdoc.fr/item/01779147} }
Patterson, Richard F. Rate preservation of double sequences under . International Journal of Mathematics and Mathematical Sciences, Tome 30 (2002) pp. 637-643. doi : 10.1155/S0161171202005331. http://gdmltest.u-ga.fr/item/01779147/