TY - JOUR AU - Kenderov, Petar TI - Seventieth Anniversary of Professor Vesselin Stoyanov Drensky JO - Mathematics and Education in Mathematics PY - 2022 SP - 23 EP - 31 VL - 50 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MEM_2022_50_a0/ LA - en ID - MEM_2022_50_a0 ER -