Kawai, Takahiro; Takei, Yoshitsugu Some problems in algebraic analysis of singular perturbations. (English) Zbl 0938.34532 RIMS Kokyuroku 1014, 15-20 (1997). Cited in 1 Document MSC: 34E15 Singular perturbations for ordinary differential equations 34M55 Painlevé and other special ordinary differential equations in the complex domain; classification, hierarchies PDFBibTeX XMLCite \textit{T. Kawai} and \textit{Y. Takei}, RIMS Kokyuroku 1014, 15--20 (1997; Zbl 0938.34532)