1909/07/01 by E. Hellinger · 1 citation
paper · doi:10.1515/crll.1909.136.210
crossref issued 1909/07/01 · crossref published 1909/07/01 · crossref published-print 1909/07/01 · crossref published-online 2009/12/09 · crossref created 2009/12/09 · crossref deposited 2022/11/07 · crossref indexed 2026/08/04