Citation behind a display equation

Question

I occasionally have a case where I want to give a formula and also attribute it. This ends up like that:

I do not really like that, though. The citation looks very odd at this spot. If the next paragraph would continue right after the citation mark, it would be worse, I fear.

• One solution would be to just attach the citation mark at the end of the sentence, perhaps even after a colon behind “by”. This does not really make sense from a reading-flow perspective.

• One could also try to mangle in another sentence, attribute that and give the equation afterwards. That would look nicer but not be correct.

• Alternatively, we can use the \textcite command from biblatex which will produce

  Schatz, Weidinger, Deicher [SWD10]

  instead and can by used in the text like

  the factor is given by Schatz, Weidinger, Deicher [SWD10] as EQUATION.

  Or one could append that like this:

  the factor is given by EQUATION as given by Schatz, Weidinger, Deicher [SWD10].

What would be a good solution that is both scientifically correct and also the least ugly?

Answer 1

Your second option is one I have seen frequently. As an example of its use, have a look at page 19 of http://arxiv.org/abs/1501.07274, just above their equation (2.3), where they use that format of citation for a formula. (Never forget, though, that citation style is usually dictated by the journal you are submitting to. Be certain to check their editorial and style guidelines for the context-dependent answer to your question.)