E Cohen1. Show Affiliations » 1. DEPARTMENT OF MATHEMATICS, UNIVERSITY OF SOUTH CAROLINA.
Abstract
Year: 1956 PMID: 16589832 PMCID: PMC528230 DOI: 10.1073/pnas.42.3.120
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205