LMGC90: a Contact Dynamics open source code for the simulation of granular asteroid with realistic regolith shapes. Application to the accretion processPaul Sánchez, Mathieu Renouf, Emilien Azéma and Rémy MozulEPJ Web Conf., 249 (2021) 14007DOI: https://doi.org/10.1051/epjconf/202124914007