中国科学院数学与系统科学研究院期刊网
AMS
On the Gauss-Weierstrass Summability of Multiple Trigonometric Series at μ-smoothness Points
Sinem SEZER, Ilham A. ALIEV
Acta Mathematica Sinica . 2011, (4): 741 -746 .  DOI: 10.1007/s10114-011-9399-x