中国科学院数学与系统科学研究院期刊网
On Essentially Commuting Toeplitz Operators on the Polydisk
Xuan Hao DING(1),Cong Quan YAN
Acta Mathematica Sinica, Chinese Series . 2000, (5): 855 -860 .  DOI: 10.12386/A2000sxxb0112