::
eccolo:
`
\documentclass[a4paper,11pt,titlepage]{book}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[italian]{babel}
\usepackage{concmath}
\newcommand{\rig}[1]{\oldstylenums{#1}}
\begin{document}
1224a10-11
\rig{1224a10-11}
\end{document}
`
