I have this overleaf document https://www.overleaf.com/9383883839kbstqwwxvjdc where reference number 1 has a date but reference number 2 does not. I don't understand there is no error. Is there a command like \bib_show_date=True ?

You can also download the overleaf template from https://www.sharelatex.com/templates/journals/elsevier

  author =       "Albert Einstein",
  title =        "{Zur Elektrodynamik bewegter K{\"o}rper}. ({German})
                 [{On} the electrodynamics of moving bodies]",
  journal =      "Annalen der Physik",
  volume =       "322",
  number =       "10",
  pages =        "891--921",
  year =         "1905",
  DOI =          "http://dx.doi.org/10.1002/andp.19053221004"

    author  = "Wenzhe Shi and Jose Caballero and Ferenc Huszár and Johannes Totz and Andrew P. Aitken and Rob Bishop and Daniel Rueckert and Zehan Wang",
    title   = "Real-Time Single Image and Video Super-Resolution Using an Efficient Sub-Pixel Convolutional Neural Network",
    year    = "2016",
    journal = "CVPR"
  • Which bibliography style do you employ?
    – Mico
    Commented Feb 8, 2020 at 19:16
  • @Mico I use this function from the default code \bibliographystyle{elsarticle-num}
    – Kong
    Commented Feb 8, 2020 at 19:17

1 Answer 1


It's inappropriate to use the @article entry type for the second item in your short bib file: The @article entry type should be used exclusively for pieces published in scholarly journals. According to the CVPR website, the correct entry type for the second item is actually @incollection, as the piece was published in a conference proceedings volume. The website provides the following suggested bibtex entry:

author = {Shi, Wenzhe and Caballero, Jose and Huszár, Ferenc and Totz, Johannes 
          and Aitken, Andrew P. and Bishop, Rob and Rueckert, Daniel      
          and Wang, Zehan},
title  = {Real-Time Single Image and Video Super-Resolution Using an 
          Efficient Sub-Pixel Convolutional Neural Network},
booktitle = {The IEEE Conference on Computer Vision and Pattern Recognition (CVPR)},
month  =  {June},
year   = {2016}

You're obviously free to change the key Shi_2016_CVPR to something else.

Of course, you're also free to cite some initial or preliminary version of the paper, in which you should be using either the @techreport or the @misc entry type.

A separate comment: The elarticle-num bibliography style is known to produce unreliable output for entries of type @article which are missing both the volume and the number field (as well as, in your case, the pages field). For another manifestation of this issue, see the posting no space between 'pages' and 'doi' fields when using the elsarticle-num bibliography style. That's the cause of the missing year field issue. The solution in the present case, is not to try to "backfill" the "missing" volume and number fields. Instead, as noted earlier, the proper solution is to switch to a different entry type, say, @incollection.

  • Thank you very much !
    – Kong
    Commented Feb 10, 2020 at 9:03

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