Hille, Einar A note on Cauchy’s problem. (English) Zbl 0049.09003 Ann. Soc. Polon. Math. 25, 56-68 (1952). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 4 Documents Keywords:functional analysis PDF BibTeX XML Cite \textit{E. Hille}, Ann. Soc. Polon. Math. 25, 56--68 (1952; Zbl 0049.09003)