Volume 14, Issue 3 Cristinel Mortici The natural approach of Wilker-Cusa-Huygens inequalities 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 Cristinel Mortici Find more articles with the same keywords trigonometric inequalities power series Find more articles with the same subject classes 26D05 26D15 33B10