Volume 11, Issue 3 Cristian-Paul Danet On the elliptic inequality Lu ≤ 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 Cristian-Paul Danet Find more articles with the same keywords elliptic problems uniqueness comparison principle fourth-order Find more articles with the same subject classes 34A40 35A05 35G99