The existence of optimal controls in the absence of convexity conditions

On Certain Questions in the Theory of Optimal Control

Alexander Filippov · Journal of the Society for Industrial and Applied Mathematics Series A Control · 1962 · 439 citations

Mathematical Programming, Control Strategy, Optimal Control +6

Relaxed variational problems

J. Warga · Journal of Mathematical Analysis and Applications · 1962 · 251 citations

Relaxed Variational Problems, Variational Analysis, Variational Inequality +2

The existence of optimal controls.

Emilio O. Roxin · The Michigan Mathematical Journal · 1962 · 153 citations · Full text

Controllability, Mathematical Control Theory, Control Strategy +1

Optimal control for nonlinear processes

E. B. Lee, Lawrence Markus · Archive for Rational Mechanics and Analysis · 1961 · 121 citations

Nonlinear Control, Optimal Control, Mathematical Control Theory +3

TIME OPTIMAL CONTROL SYSTEMS

J. P. LaSalle · Proceedings of the National Academy of Sciences · 1959 · 108 citations