1. Leitmann, G., andSkowronski, J.,Avoidance Control, Journal of Optimization Theory and Applications, Vol. 23, No. 4, 1977.
2. Stalford, H.,Sufficient Conditions for Optimal Control with State and Control Constraints, Journal of Optimization Theory and Applications, Vol. 7, No. 2, 1971.
3. Isaacs, R.,Differential Games, John Wiley and Sons, New York, New York, 1965.
4. Blaquiere, A., Gerard, F., andLeitmann, G.,Quantitative and Qualitative Games, Academic Press, New York, New York, 1967.
5. Vincent, T. L.,Avoidance of Guided Projectiles, The Theory and Application of Differential Games, Edited by J. D. Grote, D. Reidel Publishing Company, Dordrecht, Holland, 1975.