Nonequilibrium Problems in Many-Particle Systems Lectures Given at the 3rd Session of the Centro Internazionale Matematico Estivo (C. I. M. E. ) Held in Monecatini, Italy, June 15-27 1992 - Cercignani, Carlo; Pulvirenti, Mario; Arkeryd, L.; Lions, P-L.; Markowich, Peter A.; Varadhan, S. R. S. (Lecture Notes in Mathematics Ser.)