W V Petryshyn1. Show Affiliations » 1. DEPARTMENT OF MATHEMATICS, UNIVERSITY OF CHICAGO.
Abstract
Year: 1966 PMID: 16591344 PMCID: PMC224210 DOI: 10.1073/pnas.55.4.684
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205