Hagedorn, P., Hagedorn, P., Knobloch, H. W., & Olsder, G. J. (1977). Differential games and applications: Proceedings of a workshop, Enschede 1977. Springer.

Hagedorn, P.ed, P. Hagedorn, H. W. Knobloch, and Geert Jan Olsder. Differential Games and Applications: Proceedings of a Workshop, Enschede 1977. Berlin ; Heidelberg ; New York: Springer, 1977.

Hagedorn, P.ed, et al. Differential Games and Applications: Proceedings of a Workshop, Enschede 1977. Springer, 1977.