中国科学院数学与系统科学研究院期刊网
AMS
The Dual Spaces of Sets of Difference Sequences of Order m and Matrix Transformations
Eberhard MALKOWSKY, M. MURSALEEN, Suthep SUANTAI
Acta Mathematica Sinica . 2007, (3): 521 -532 .  DOI: 10.1007/s10114-005-0719-x