Dmitruk, Andrey V., and Nikolay P. Osmolovskii. “LOCALMINIMUM PRINCIPLE FOR OPTIMIZATION PROBLEMS WITH DIFFERENT TYPES OF CONTROL SYSTEMS SUBJECT TO MIXED STATE-CONTROL CONSTRAINTS”. International Journal for Computational Civil and Structural Engineering, vol. 14, no. 2, June 2018, pp. 57-64, doi:10.22337/2587-9618-2018-14-2-57-64.