1.   The Inverse of Some Differential Operators on the Heisenberg Group Comm. in PDEs. Vol.20 (7&8)(1995), 1275-1302.
       2.  Embedding $\text{\bf C}^1$ into $\text{\bf H}_1$  Canad. J. Math. Vol. 47 (6)(1996), 1317-1328.
       3.   (Joint with Der-Chen Chang)) Estimates for the spectral projection operators of the sub-Laplacian on the Heisenberg group  J. Analyse. Math
           Vol.71 (6)(1997), 313-347.
       4. (Joint with Der-Chen Chang) Estimates for the powers of the sub-Laplacian on the non-isotropic Heisenberg group J. Geom. Anal  .
           Vol.10 (4) (2000), 653-678.
       5  (Joint with Der-Chen Chang) Some differential operators related to the sub-Laplacian on the non-isotropic Heisenberg group  Math. Nachr.
          Vol. 221 (2001) 19-29..
       6.  The explicit solution of the $\bar\partial$-Neumann problem in the non-isotropic Siegel Domain.  Canad. J. Math. Vol.49  (6) (1997),1299-1322
       7. (Joint with Der-Chen Chang) An identity related to the Riesz transforms on the Heisenberg group. Complex Variables Theory Appl.
           Vol.40 (6) (2000),  395--421.
       8.(Joint with Der-Chen Chang) Applications of Laguerre calculus to Dirichlet problem of the Heisenberg Laplacian. in Finite or infinite dimensional
          complex analysis (Fukuoka, 1999), 47--53, Lecture Notes in Pure and Appl. Math., 214, Dekker, New York, 2000.
       9. {Joint with Der-Chen Chang) Hermit operator and Subelliptic Operators, Preprint, 2002.
      10. (Joint with Der-Chen Chang and Peter Greiner) Sub-Riemannian Geometry and Subelliptic PDEs, Preprint, 2002.