中国科学院数学与系统科学研究院期刊网
AMS
On n-Widths of a Sobolev Function Class in Orlicz Spaces
Xiao Li WANG, Ga Ridi WU
Acta Mathematica Sinica . 2015, (9): 1475 -1486 .  DOI: 10.1007/s10114-015-4231-7