[SCITEPRESS - Science and and Technology Publications 11th International Conference on Informatics in Control, Automation and Robotics - Vienna, Austria (2014.9.1-2014.9.3)] Proceedings of the 11th International Conference on Informatics in Control, Automation and Robotics - Cell Formation Problem: An Multithreading Tabu Search for Setup Time Optimization for Limited Machine Magazines - A New Solution for a Classical Problem