Volume 14, Issue 3 Delio Mugnolo Marvin Plümer Lower estimates on eigenvalues of quantum graphs 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 Delio Mugnolo Marvin Plümer Find more articles with the same keywords spectral geometry of quantum graphs planar graphs double cover conjecture normalized Laplacians Find more articles with the same subject classes 34B45 05C50 35P15 81Q35