Volume 7, Issue 4 Zheng Jie Sun Ling Zhu Simple proofs of the Cusa-Huygens-type and Becker-Stark-type 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 Zheng Jie Sun Ling Zhu Find more articles with the same keywords circular functions the Cusa-Huygens-type inequalities the Becker-Stark-type inequalities new simple proofs of two conjecture by Chen and Chueng Find more articles with the same subject classes 26D20