W de Sitter1. Show Affiliations » 1. Observatory at Leiden.
Abstract
Year: 1930 PMID: 16577276 PMCID: PMC526673 DOI: 10.1073/pnas.16.7.474
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205