On 3/26/20 11:15 AM, Patrick Dupre wrote: > Hello, > > I can set the basis bibtex option in the article standard class > but as soon that I set the Revtex class, I lost this option > It returns to Natbib > > How can I have basis bibtex with Revtex 4.1 ? You can't. The revtex classes load natbib themselves. Riki