TY - JOUR AU - R. M. Ashrapov AU - P. S. Dergach TI - On covering sets of a special type by geometric progressions with a certain restrictions JO - Čebyševskij sbornik PY - 2024 SP - 237 EP - 243 VL - 25 IS - 5 UR - http://geodesic.mathdoc.fr/item/CHEB_2024_25_5_a15/ LA - ru ID - CHEB_2024_25_5_a15 ER -