TY - JOUR AU - Announcement ​ TI - Symmetries of Discrete Objects (SODO 2020) JO - Ars Mathematica Contemporanea PY - 2019 VL - 17 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AMC_2019__17_1_a21/ LA - en ID - AMC_2019__17_1_a21 ER -