Section headings and selected papers. Algebraic Methods in Nonlinear Control Theory. Differential algebra and controllability, A Haddak. Geometric Methods in Nonlinear Control Theory. Virtual decomposition and time scale decoupling control of nonlinear systems, S Ishijima. Discrete-Time Systems. Target-directed control of nonlinear systems, R F Drenick. Input-Output Methods of Analysis and Design. Harmonic balancing using a volterra input output description, S T Glad & K Stahl. Stability and Regulation. A generalisation of the small-gain theorem for nonlinear feedback systems, D J Hill. Adaptive Control of Nonlinear Systems. Direct adaptive control of nonlinear systems, P A Cook. Variable Structure Systems. On discrete-time sliding modes, S V Drakunov & V I Utkin. Differential Inclusions. On the solution of optimization problems with inclusion constraints, J V Outrata. Optimal Control. Relaxation and optimal control of nonlinear distributed parameter systems, N S Papageorgiou. Nonlinear Control of Chemical Systems. Qualitative and control behavior of a class of chemical and biological systems, N Samardzija. Nonlinear Control of Electrical Systems. The design of linearizing outputs for induction motors, A De Luca & G Ulivi. Nonlinear Control of Mechanical Systems. Nonlinear identification and observer based compensation of friction in mechanical systems, J C Maron. Author index. Keyword index.