TY - JOUR TI - Vladislav Sergeevich Medvedev. On the Occasion of his 80th Birthday JO - Russian journal of nonlinear dynamics PY - 2023 SP - 159 EP - 163 VL - 19 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ND_2023_19_1_a9/ LA - en ID - ND_2023_19_1_a9 ER -