Volume 13, Issue 4 Wenlong Sun Yuanfeng Jin Choonkil Park Gang Lu 3-Variable double ρ-functional inequalities of Drygas 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 Wenlong Sun Yuanfeng Jin Choonkil Park Gang Lu Find more articles with the same keywords Drygas functional equation Hyers-Ulam stability double ρ-functional inequalities Banach space Find more articles with the same subject classes 39B62 39B52 46B25