Differential Games and Applications : Proceedings of a Workshop Enschede 1977 Singular surfaces in differential games an introduction Differential games with piece wise continuous trajectories Lecture notes Two lectures on Cournots problem The existence of optimal strategies and saddle points in stochastic differential games Feedback strategies in deterministic differential games Toward a general theory of pursuit and evasion Many player differential games On observation costs and information structures in stochastic differential games Differential games with partial differential equations Collision avoidance at sea Environmental adaptation by annual plants (an optimal control games viewpoint).