PageHeader : Funkcialaj Ekvacioj, 13 (1970), 199-213 Title : Integral Manifolds for Linear Functional Title : Differential Equations on Some Banach Space AuthorInfo : By Toshiki NAITO AuthorInfo : (Tohoku University) section : 1. Introduction. section : 2. The existence theorem of integral manifolds. section : 3, The theorem of Halanay and Kurzweil. section : 4. Lemmas. section : 5. The proof of Theorem 2. 1. section : References