An Algorithm to Obtain Formal Solutions of a Linear Homogeneous Differential Equation at an Irregular Singular Point.

Jean Della Dora Claire Dicrescenzo Evelyne Tournier An Algorithm to Obtain Formal Solutions of a Linear Homogeneous Differential Equation at an Irregular Singular Point. 273-280 1982 conf/eurocal/1982 EUROCAM db/conf/eurocal/eurocam1982.html#DoraCT82