Issue no. 1 Table of Contents

A variational model for equilibrium problems in a traffic network
Heuristic and metaheuristic methods for computing graph treewidth
Subharmonic solutions of a nonconvex noncoercive hamiltonian system
Une nouvelle transformation des réseaux de Petri généralisés : l'abstraction généralisée
Une procédure de purification pour les problèmes de complémentarité linéaire, monotones

Issue no. 2 Table of Contents

Advances in modelling of complex systems : preface to the special issue
Modeling and simulation with augmented reality
Product form solution for g-networks with dependent service
Optimal control and performance analysis of an M X /M/1 queue with batches of negative customers
Optimal control for a BMAP/SM/1 queue with MAP-input of disasters and two operation modes
Characterization of the departure process from an ME/ME/1 queue

Issue no. 3 Table of Contents

Entropy maximization and the busy period of some single-server vacation models
Utilisation de la programmation dynamique dans la modélisation de la pêcherie de la sardine au Maroc
Maximum likelihood estimates and confidence intervals of an M/M/R/N queue with balking and heterogeneous servers
Application des lois non paramétriques dans les systèmes d'attente et la théorie de renouvellement
On constraint qualifications in directionally differentiable multiobjective optimization problems

Issue no. 4 Table of Contents

Deterministic global optimization using interval constraint propagation techniques
Two new classes of trees embeddable into hypercubes
On dual vector optimization and shadow prices
Fast approximation of minimum multicast congestion - Implementation versus theory
A threshold accepting approach to the open vehicle routing problem