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To cite multiple references, I'm using \cite{foo, bar}. Unfortunately, the second citation appears on a new page. Is there a way to force a hardspace between the two citations?

This is primarily a problem because a new section begins on page 29: enter image description here

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If the last line of a paragraph starts a new page, that lne is referred to as "widow"; see questions tagged with widows-orphans. –  lockstep Jan 22 '13 at 13:16
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up vote 7 down vote accepted

For a one-off final editing correction rather than changing the setting of all such citations you could use \mbox{\cite{foo,bar}} But I doubt there is enough flexibility in the shown line to find good line and page break in that case.

It might be better (if re-wording isn't an option) to allow the line to break there but use


To allow the 45] to stay on the page (on an extra line) and the section to start the next page. As the line is so short it won't interfere with the page number.

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+1 for teaching me \enlargethispage - great to know! –  Hendrik Vogt Jan 23 '13 at 12:35
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