Revaz Gamkrelidze is 70. (With a list of selected scientific papers). Kharatishvili, Guram — 1997 Memoirs on Differential Equations and Mathematical Physics
The problem of optimal control for nonlinear systems with variable structure, delays and piecewise continuous prehistory. Kharatishvili, Guram L.; Tadumadze, Tamaz A. — 1997 Memoirs on Differential Equations and Mathematical Physics