Barseghyan, V. R. ABOUT A PROBLEM OF OPTIMAL CONTROL OF STEPWISE CHANGING LINEAR SYSTEMS WITH PHASE STATES RESTRICTIONS IN INTERMEDIATE MOMENTE. Proc. YSU A: Phys. Math. Sci. 2002, 36 (1 (197), 118-120. https://doi.org/10.46991/PYSUA.2002.36.1.118.