Ōuchi, Sunao Asymptotic expansion of singular solutions and characteristic polygon of linear partial differential equations with holomorphic coefficients. (English) Zbl 0969.35507 RIMS Kokyuroku 1159, 87-91 (2000). MSC: 35A20 Analyticity in context of PDEs 35C20 Asymptotic expansions of solutions to PDEs PDFBibTeX XMLCite \textit{S. Ōuchi}, RIMS Kokyuroku 1159, 87--91 (2000; Zbl 0969.35507)