@ctan{l3, author = {{The \LaTeX3\ project}}, title = {The \texttt{expl3} package and \LaTeX3\ programming}, date = {2017-12-16}, urldate = {2018-02-04}, url = {/latex/macros/contrib/l3kernel/expl3.pdf} } @ctan{xfp, author = {{The \LaTeX3\ project}}, title = {The \texttt{xfp} package -- Floating Point Unit}, Organisation = {CTAN}, url = {/pkg/xfp}, urldate = {2018-02-04}, }