TY JOUR TI The Control System Models with the Turnpike Solutions In the Optimal Control Problems KW mathematical model KW degenerate problem KW turnpike solution KW relaxed system KW zero-overshoot response KW ecology-economic problem. JO Program systems: theory and applications AU Gurman, V.. AU Guseva, I.. PY 2013 IS 4 PB Publishing Center RIOR