Issue 101-102/2002 Francesca Fumero, Solving techniques for the Lagrangean dual Anna Sciomachen, Paola Modesti, Two simple proposals for evaluating decision parameters in the parking choice problems Claudio Arbib, Gianfranco Ciaschetti, Antonia Petrucci, Mold and job scheduling in plastic printing: a column generation approach Claudio Arbib, Fabrizio Marinelli, Scheduling and control of material handling in a flexible manufacturing cell