
| Bilevel programming: A survey | 
| A distance based rule for removing population members in genetic algorithms | 
| Open shop unit-time scheduling problems with symmetric objective functions | 
| On the length of longest chordless cycles | 
| Lower bounding and tabu search procedures for the frequency assignment problem with polarization constraints | 
| Metaheuristic algorithms for combinatorial optimization problems | 
| Dynamic management of a portfolio of orders |