Strange margin change in bibliography

Question

For some reason, my bibliography margin has changed after a certain entry. I've attached an image of what's happening.

When I shuffled sources around, I found that it always happens at that particular bibliography entry. So, I checked the .bbl file and found this in the preceding entry:

\newblock 10.1007/978-3-540-92219-3_20.

Removing that fixes the problem. The thing is, I'd like for DOI and URL entries to be included in my bibliography. Should I be doing something differently?

Answer 1

As pointed out in the comment of the question, the error is in the bib file. The number is a doi and apparently there is a closing } missing. I figure that you are using biblatex and doi's are normally automatically typeset as verbatim/url.

Find this number in the bib file and check that the doi is enclosed in {}

Answer 2

The underscore _ in 10.1007/978-3-540-92219-3_20 may cause a problem because _ is the command for subscripts and requires math mode.

• You could use \_

• Or use \textunderscore (perhaps encoding dependent, I recommend to use T1: \usepackage[T1]{fontenc}

• You could use the underscore package

• you could use commands of the url package such as \path or \url. \urlstyle{same} would use the normal text font.

• If the bibliography style supports underscores or URLs, use braces, already recommended by Martin-H in his comment.