1. Facchinei, F., Pang, J.S.: Finite-Dimensional Variational Inequalities and Complementarity Problems. Springer Series in Operations Research. Springer, New York (2003)
2. Kinderlehrer, D., Stampacchia, G.: An Introduction to Variational Inequalities and Their Applications. Academic Press, New York (1980)
3. Bauschke, H.H., Combettes, P.L.: Convex Analysis and Monotone Operator Theory in Hilbert Spaces. Springer, New York (2020)
4. Baiocchi, C., Capelo, A.: Variational and Quasivariational Inequalities Applications to Free Boundary problems. Wiley, New York (1984)
5. Cottle, R.W., Yao, J.C.: Pseudomonotone complementarity problems in Hilbert space. J. Optim. Theory Appl. 75, 281–295 (1992)