P W Hodge1, F W Wright. Show Affiliations » 1. Smithsonian Institution, Astrophysical Observatory, Cambridge, Massachusetts 02138, USA.
Abstract
Year: 1970 PMID: 16056712 DOI: 10.1038/225717a0
Source DB: PubMed Journal: Nature ISSN: 0028-0836 Impact factor: 49.962