TY - JOUR AU - B. I. Efendiev TI - Lyapunov Inequality for Second-Order Equation with Operator of Distributed Differentiation JO - Matematičeskie zametki PY - 2023 SP - 950 EP - 953 VL - 113 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2023_113_6_a15/ LA - ru ID - MZM_2023_113_6_a15 ER -