1、Kunyu Guo, Hansong Huang, Multiplication operators defined by covering maps on the Bergman space: The connection between operator theory and von Neumann algebras, J. Funct. Anal. 260 (2011), 1219–1255.
2、Kunyu Guo and Kai Wang, Essentially normal Hilbert modules and K-homology, Math. Ann. 340(2008),907-934.
3、Kunyu Guo, Defect operators for submodules of H_d^2, J. fur Reine und Angew. Math, 573(2004), 181-209.
4、Kunyu Guo, Defect operators, defect functions and defect indices for analytic submodules, J. Funct. Anal. 213(2004), 380-411.
5、Xiaoman Chen, Kunyu Guo, Analytic Hilbert Modules,π-Chapman&Hall/CRC Research Notes in Math. 433,2003.