Volume 3, Issue 4 José C. Sabina de Lis A concave-convex quasilinear elliptic problem subject to a nonlinear boundary condition 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 José C. Sabina de Lis Find more articles with the same keywords variational methods sub and supersolutions degenerate diffusion Find more articles with the same subject classes 35J70 35B32