PageHeader : Funkcialaj Ekvacioj, 20 (1977) 193-212 Title : Singular Gauchy Problems and Asymptotic Behaviour for Title : a Class of n-th Order Differential Equations AuthorInfo : By AuthorInfo : Antonio GRANATA(*) AuthorInfo : (Universita delia Calabria, Italy) section : 1. Introduction. section : 2. Main results. section : 3. Asymptotic equivalence between solutions of $Lu+qu=0$ and of $Lw=0$ . section : 4. Extension to nonh.near equations. section : Appendix section : References