Volume 2, Issue 4 Andrea Posilicano Self-adjoint extensions of restrictions 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 Andrea Posilicano Find more articles with the same keywords self-adjoint extensions Kreĭn's resolvent formula elliptic boundary value problems Find more articles with the same subject classes 47B25 47B38 35J25