Tables of the functions of the parabolic cylinder for negative integer parameters J. Murzewski; A. Sowa — 1972 Applicationes Mathematicae
On the inverse of two variables power series M. Ptak; A. Rutkowska; A. Sowa — 1995 Mathematica Applicanda We show a new recurrent formula for coefficients of an inverse of a power series of two variables with partially vanishing coefficient