I have been using Latex online through Overleaf for a while now. I use Biblatex to do compile my Bibliographies.
In the last document, I've encountered the following problem.
I need to reference two papers. One is authored by Gilat (name) Levy (surname) and Ronny (name) Razin (surname). Another that has the same two authors plus Ines (name) Moreno de Barreda (surname).
I need the references to appear as Levy and Razin (year) and Levy et al. (year). Therefore, I put the following options when I called the package Biblatex (see screenshot). Also I called as usual my Bib file.
Here's a screenshot of the bib file. Everything seems fine to me and correct.
Still, when compiling, I get the following
Levy and Razin (year) is good, but I get Levy, Barreda, et al. (year), instead of Levy et al. (year).
Changing the author input in the bib file, I still get the same error, or similar errors.
For instance, if in the bib file I change the format to
Surname author 1, Name author 1, and Surname author 2, Name author 2 , etc.
I get Levy, Moreno de Barreda, et al. (year), which is still incorrect.
Clearly there's some confusion as the same two authors appear in both papers. Yet, it shouldn't be like that.
I tried to change the author part of the bibfile for the Levy et al. (2022) paper many times.
I changed to the format Levy, Gilat, and Moreno de Barreda, Ines, and Ronny Razin and to many many variations thereof. Still, I always get an incorrect outcome when I compile.
I put {} around Moreno de Barreda as the software might be confused about the three-words surname but nothing changed.
Any help would be deeply appreciated.




\documentclassand containing\begin{document}...\end{document}that reproduces what you are seeing with as little code as possible. – moewe Aug 29 '23 at 05:50uniquelist(see e.g. https://tex.stackexchange.com/q/69028/35864) is what you want here, but I haven't tested it, because I did not want to re-type the.bibentries from the screenshot. – moewe Aug 29 '23 at 05:55