Lately I have been thinking about what is the right way to cite other papers (i.e., what to put in the bibliography entries, in the section which is typically called "References"). As many papers are available online nowadays, it seems to me that bibliographic references should include, whenever possible, a link to the paper being cited: this is supported by the PDF format, and is easy to do (at least for works typeset in LaTeX: e.g., with \href{}
or \url{}
). Yet, strangely, I have never seen a paper whose bibliography entries consistently featured URLs or hyperlinks to the works being cited. Is it good practice to include hyperlinks in bibliographies? If yes, why is essentially no one doing it?
One possible explanation is laziness on the part of the authors, but, strangely, there are still many papers whose bibliography entries include information about volumes, series, and page numbers, even though in my field (computer science) I have never seen anyone look up a paper using this information: people just search for papers with Google using the title and authors every time (in other words, they work around the non-existence of a hyperlink which should be there). Maybe the explanation is that existing bibliography management tools make it easier to manage page information than URLs? But is this just inertia, or is there a good reason?
A side question is assuming you want to have hyperlinks in your bibliography, which hyperlinks should you use? I have a preference to link to open-access versions of the cited papers (i.e., which aren't paywalled, so everyone can follow the link), but this sometimes conflicts with other desiderata, such as having a stable URL (e.g., not a PDF on some author's personal web site), having a link which indicates the DOI of the paper, etc. Which criteria should one preferably follow?
Another side question in this case is how should the links be formatted? One possibility is to write out the URLs explicitly, but this ends up taking a lot of space, and may be illegible, especially for long URLs. The other option is to use \href{}
, i.e., put a hyperlink on the paper title, but this is probably not very discoverable, and it means information is lost whenever someone prints the paper. Which one is preferable, or are there other formatting options?
Edit: For papers submitted to publishers, indeed, it probably suffices to follow the publisher style (although the question remains of why so little publishers seem to be doing it). My question was more about preprints and author-final versions, prepared by the authors to be published online (e.g., on arXiv) independently from any specific publisher.
Related questions (with URLs ;)):