High-order Green Operators on the Disk and the Polydisc
  In this paper, we give the explicit expressions of high-order Green operators on the disk and the polydisc, and hence the kernel functions of high-order Green operators are also presented. As applications, we present the explicit integral expressions of all the solutions for linear high-order partial differential equations in the disk. 
Yang Liu, Zhihua Chen and Yifei Pan
math.CV