Volume 14, Issue 4 Horst Behncke Don B. Hinton 𝒞-symmetric second order differential operators 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 Horst Behncke Don B. Hinton Find more articles with the same keywords m-functions singular operators essential spectrum non-selfadjoint operators C-symmetric operators Green's functions Find more articles with the same subject classes 34L05 34B20 34B27 34B40 34B60