TY - JOUR AU - V. N. Ushakov AU - A. A. Ershov TI - On recovering of unknown constant parameter by several test controls JO - Ufa mathematical journal PY - 2020 SP - 99 EP - 113 VL - 12 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/UFA_2020_12_4_a8/ LA - en ID - UFA_2020_12_4_a8 ER -