G Birkhoff1. Show Affiliations » 1. Harvard University.
Abstract
Year: 1938 PMID: 16588211 PMCID: PMC1077053 DOI: 10.1073/pnas.24.3.154
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205