Books by Yoshitsugu Takei
Complex Differential and Diffe
Complex Differential and Difference Equations
Instanton-type formal solution
Instanton-type formal solutions for the first Painlevé hierarchy
Recent rends in exponential as
Recent rends in exponential asymptotics
Kanzen sai kyūkōkahō
Kanzen sai kyūkōkahō
Toward the exact WKB analysis
Toward the exact WKB analysis of differential equations, linear or non-linear