Articles Energy Production in Stars See allHide authors and affiliations Science 09 Aug 1968:Vol. 161, Issue 3841, pp. 541-547DOI: 10.1126/science.161.3841.541 Hans A. BetheFind this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.