1. Subbotin AI. Generalized Solutions of First-Order Partial Differential Equations: Prospects for of Dynamic Optimization. Moscow, Izhevsk: Inst. Komp’yut. Issledovanii; 2003.
2. Singular characteristics of first order partial differential equations;Melikyan;Dokl Rüss Akad Nauk,1996
3. Generalized Characteristics of First Order PDEs: Applications in Optimal Control and Differential Games;Melikyan,1998
4. Differential Games;Isaacs,1965
5. Partial Differential Equations;Evans,1998