TY JOUR TI Asymptotic solution of the terminal control problem vertical lift rockets-probe KW optimal control KW singular perturbations. JO Actual directions of scientific researches of the XXI century: theory and practice AU Korypaeva, Y.. AU Suslov, A.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov