1. Stampacchia, G., Formes Bilineaires Coercitives sur les Ensembles Convexes, Comptes Rendus de l'Academie des Sciences, Paris, Vol. 258, pp. 4413–4416, 1964.
2. Baiocchi, C., and Capelo, A., Variational and Quasivariational Inequalities, John Wiley and Sons, New York, NY, 1984.
3. Giannessi, F., and MAUGERI, A., Variational Inequalities and Network Equilibrium Problems, Plenum Press, New York, NY, 1995.
4. Giannessi, F., MAUGERI, A. and PARDALOS, M. S., Equilibrium Problems: Nonsmooth Optimization and Variational Inequality Models, Kluwer Academic Publishers, Dordrecht, Holland, 2001.
5. Glowinski, R., Lions, J. L., and Tremolieres, R., Numerical Analysis of Variational Inequalities, North-Holland, Amsterdam, Holland, 1981.