Sharp Estimates for the $\bar{\partial}$-Neumann Problem on Regular   Coordinate Domains
  This paper treats subelliptic estimates for the $\bar{\partial}$-Neumann problem on a class of domains known as regular coordinate domains. Our main result is that the largest subelliptic gain for a regular coordinate domain is bounded below by a purely algebraic number, the inverse of twice the multiplicity of the ideal associated to a given boundary point. 
David W. Catlin and Jae-Seong Cho