Volume 23, Issue 1 Mohamed Bouali On an open problem of Feng Qi and Bai-Ni Guo 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 Mohamed Bouali Find more articles with the same keywords real functions complete monotonic functions Find more articles with the same subject classes 26A09 33B10 26A48