Volume 5, Issue 1 Haishen Lü Donal O'Regan A general existence theorem for the singular equation (ϕp(y'))'+f(t,y)=0 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 Haishen Lü Donal O'Regan Find more articles with the same keywords one-dimensional singular equation positive solution lower-upper solution method Find more articles with the same subject classes 34B15