Workshop on Nonlinear Evolution Equation and Dynamical Systems.Workshop on Nonlinear Evolution Eqution and Dynamical Systems(7th : 1991 : Gallipoli):Nonlinear evolution equations and dynamic systems.WS,1991.
International Workshop on Nonlinear Evolution Equations and Dynamical Systems,NEEDS`90.International Workshop on Nonlinear Evolution Equations and Dynamical Systems(6th : 1990 : Dubna):Nonlinear evolution equations and dynamitic systems.Springer,1991.