List of Articles Vehicle routing problem Open Access Article Abstract Page Full-Text 1 - A Meta-heuristic Approach to CVRP Problem: Local Search Optimization Based on GA and Ant Colony Arash Mazidi Mostafa Fakhrahmad Mohammadhadi Sadreddini Open Access Article Abstract Page Full-Text 2 - An Improved Modified Tabu Search Algorithm to Solve the Vehicle Routing Problem with Simultaneous Pickup and Delivery Majid Yousefikhoshbakht Farzad Didehvar Farhad Rahmati