Journal of Mathematical Inequalities · Volume 9, Issue 3 On an extension of Sakaguchi's result 09-57 Pages 683-697 DOI 10.7153/jmi-09-57 Downloads Short PDF Full PDF PNG Authors Mamoru Nunokawa Janusz Sokół Keywords analytic functions convex functions univalent functions Jack's lemma Nunokawa's Lemma Subject classes 30C45 30C80