TY - JOUR AU - L. I. Rodina AU - A. V. Chernikova TI - On the properties of systems of differential equations and problems of optimal resource extraction JO - Matematičeskoe obrazovanie PY - 2024 SP - 31 EP - 45 VL - 111 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MO_2024_111_3_a4/ LA - ru ID - MO_2024_111_3_a4 ER -