I have a Zotero bibliography in Overleaf. I use biblatex.


Bibliography entries look like:

    title = {Uniformization of {Riemann} {Surfaces}},
    isbn = {978-3-03719-145-3},
    url = {https://www.ems-ph.org/books/book.php?proj_nr=198&srch=series%7Chem},
    urldate = {2019-02-03},
    author = {de Saint-Gervais, Paul Henri},
    year = {2016},
    doi = {10.4171/145}

In the bibliography down the paper the reference shows like this: enter image description here There is the DOI, great, but also the URL which is unnecessary when the DOI is there.

How can I remove the URL when the DOI is present?


I really thought there would be a duplicate, but I could not find a good one. (Biblatex: use doi only if there is no URL asks for the opposite and has a sourcemap solution. Redundancy in bib file: conditionally suppress url if same as doi? is asking for something slightly different and is not specific to biblatex, but has some biblatex answers, none of them uses a sourcemap, though. Print url only if doi not present is very close, the question additionally asks about eprint, but that could probably be ignored.)

My preferred solution would be to use a Biber sourcemap to completely remove the url and urldate field if the doi is present.


\usepackage[style=authoryear, backend=biber]{biblatex}


  title   = {Uniformization of {Riemann} {Surfaces}},
  isbn    = {978-3-03719-145-3},
  url     = {https://www.ems-ph.org/books/book.php?proj_nr=198&srch=series%7Chem},
  urldate = {2019-02-03},
  author  = {de Saint-Gervais, Paul Henri},
  year    = {2016},
  doi     = {10.4171/145}



Saint-Gervais, Paul Henri de (2016). Uniformization of Riemann Surfaces. isbn: 978-3-03719-145-3. doi: 10.4171/145.

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