1. Baiocchi, C. and Capelo, A.: Disequazioni variazionali e quasi-variazionali, Applicazioni a problemi di frontiera libera, Vols. I and II, Unione Matematica Italiana, Bologna, 1978, English translation, John Wiley, Chichester, 1984.
2. Bensoussan, A.: Stochastic Control by Functional Analysis Methods, North-Holland, Amsterdam, 1982.
3. Bensoussan, A. and Lions, J. L.: Applications des inéquations variationnelles en contrôle stochastique, Dunod, Paris, 1978. English translation North-Holland, 1982.
4. Bensoussan, A. and Lions, J. L.: Contrôle impulsionnel et inéquations quasi-variationnelles, Dunod, Paris, 1982.
5. Blankenship, B. and Menaldi, J. L.: ?Optimal Stochastic Scheduling of Power Generation Systems with Scheduling Delays and Large Cost Differentials?, SIAM J. Control Optimal 22 (1984), 121?132.