Second order conditions for periodic optimal control problems John Allwright; Richard Vinter — 2005 Control and Cybernetics
Stability analysis of sliding-mode feedback control Francis Clarke; Richard Vinter — 2009 Control and Cybernetics
Differential inclusions with free time Philip D. Loewen; Frank H. Clarke; Richard B. Vinter — 1988 Annales de l'I.H.P. Analyse non linéaire