Nonlinear analysis, differential equations and control / ed. by F.H. Clarke and R.J. Stern ; technical ed. G. Sabidussi
Proceedings of the NATO Advanced Study Institute and Séminaire de mathématiques supérieures on Nonlinear Analysis, Differential Equations and Control, Montréal, Canada, July 27 - August 7, 1998. - Publ. in cooperation with NATO Scientific Affairs Division