Volume 8, Issue 1 Xiaojie Xu Daqing Jiang Donal O'Regan Ravi P. Agarwal Multiple Positive Solutions of Fourth-order Boundary Value Problems 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 Xiaojie Xu Daqing Jiang Donal O'Regan Ravi P. Agarwal Find more articles with the same keywords existence multiple positive solutions cone fixed point index Find more articles with the same subject classes 34B15