This is the `amsmath.sty` command for the binomial coefficient (combinations). I am not sure how to render it in HTML without MathJax. See https://iridia-ulb.github.io/references/index.html#BriCabEmm2018maximum I tried using the macro: ```latex \newcommand{\binom}[2]{C_{#1,#2}} ``` but it seems `bibtex2html` cannot handle macros with 2 arguments? Only the first one is handled.