1976/05/01 by Leslie G. Valiant
paper · doi:10.1016/0020-0190(76)90097-1
crossref issued 1976/05/01 · crossref published 1976/05/01 · crossref published-print 1976/05/01 · crossref created 2002/07/26 · crossref deposited 2019/04/12 · crossref indexed 2026/08/03