Volume 9, Issue 3 Mamoru Nunokawa Janusz Sokół On an extension of Sakaguchi's result Downloads Abstract PDF Full article PDF DOI { copied = true; setTimeout(() => copied = false, 2000) })" :aria-label="copied ? 'DOI copied' : 'Copy DOI'" :title="copied ? 'Copied' : 'Copy DOI'" > Find all available articles from these authors Mamoru Nunokawa Janusz Sokół Find more articles with the same keywords analytic functions convex functions univalent functions Jack's lemma Nunokawa's Lemma Find more articles with the same subject classes 30C45 30C80