1931/12/01 by Heinz Hopf · 13 citations
Arts and Humanities · Mathematics · #Art #Humanities #Linguistic Education and Pedagogy #Linguistic research and analysis #Linguistics and Cultural Studies #Mathematics
paper · doi:10.1007/bf01457962
crossref issued 1931/12/01 · crossref published 1931/12/01 · crossref published-print 1931/12/01 · openalex publication_date 1931/12/01 · crossref created 2005/04/13 · crossref deposited 2020/04/06 · openalex created_date 2025/10/10 · crossref indexed 2026/07/21 · openalex updated_date 2026/07/23