%0 Journal Article %A V. A. Kashtanov %A O. B. Zaiceva %A A. A. Efremov %T Controlled Semi-Markov Processes with Constraints on Control Strategies and Construction of Optimal Strategies in Reliability and Safety Models %J Matematičeskie zametki %D 2021 %P 571-580 %V 109 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2021_109_4_a7/ %G ru %F MZM_2021_109_4_a7