I would like to know how to use mathmode in Springer Nature bibliography.

This is an excerpt from the main file:

```
\begin{document}
Cite \cite{bib12}
\end{document}

```

This is an excerpt from the bib file:

```
@article{bib12, 
   author  = "R. W. Gosper",
   title   = "$\int_{\frac{m}{4}}^{\frac{n}{4}}$, Special
              functions, $q$-series and related topics",
   journal = "The Fields Institute Communications",
   volume  = "14",
   year    = "1997",
   pages   = "71--76"
}

```

After running PdFLaTeX + Bibtex + PdFLaTeX + PdFLaTeX, the output of the BBL is just 0kb.