On a fixed duration pursuit differential game with geometric and   integral constraints
  In this paper we investigate a differential game in which countably many dynamical objects pursue a single one. All the players perform simple motions. The duration of the game is fixed. The controls of a group of pursuers are subject to geometric constraints and the controls of the other pursuers and the evader are subject to integral constraints. The payoff of the game is the distance between the evader and the closest pursuer when the game is terminated. We construct optimal strategies for players and find the value of the game. 
Mehdi Salimi, Gafurjan Ibragimov, Stefan Siegmund, Somayeh Sharifi
math.OC