1971/02/01 by R. PENROSE, R. M. FLOYD · 2 citations
paper · doi:10.1038/physci229177a0
crossref issued 1971/02/01 · crossref published 1971/02/01 · crossref published-print 1971/02/01 · crossref created 2013/07/10 · crossref deposited 2023/05/19 · crossref indexed 2026/08/06