中国科学院数学与系统科学研究院期刊网
Algebraic Properties of Toeplitz and Small Hankel Operators on the Harmonic Bergman Space
Hong Yan GUAN, Yu Feng LU
Acta Mathematica Sinica . 2014, (8): 1395 -1406 .  DOI: 10.1007/s10114-014-3276-3