N=2 supersymmetric pseudodifferential symbols and super W-algebras
  We study the superconformally covariant pseudodifferential symbols defined on N=2 super Riemann surfaces. This allows us to construct a primary basis for N=2 super W_KP^(n)-algebras and, by reduction, for N=2 super W_n-algebras. 
Stephane Gourmelen