Optimal control with delayed information flow of systems driven by   $G$-Brownian motion
  In this paper we study strongly robust optimal control problems under volatility uncertainty. In the $G$-framework we adapt the stochastic maximum principle to find necessary and sufficient conditions for the existence of a strongly robust optimal control. 
Francesca Biagini, Thilo Meyer-Brandis, Bernt {\O}ksendal, Krzysztof   Paczka
math.OC