Viscosity Solutions and Applications Lectures given at the 2nd Session of the Centro Internazionale Matematico Estivo (C.I.M.E.) held in Montecatini Terme, Italy, June, 12 - 20, 1995 - Bardi, Martino; Bardi, Martino; Crandall, Michael G.; Evans, Lawrence C.; Soner, Halil M.; Souganidis, Panagiotis E. (Springer Berlin Heidelberg : Imprint: Springer, 1997)