ELIZALDE-MEDRANO, A.; TEJEIDA-PADILLA, R.; MORALES-MATAMOROS, O.; MENDEZ-DIAZ, J. THE SOFT SYSTEMS METHODOLOGY ON THE IMPLEMENTING OF A GPS SYSTEM, IN THE TRUCKING COMPANIES. Proceedings of the 54th Annual Meeting of the ISSS - 2010, Waterloo, Canada, v. 54, n. 1, 16 Jul. 2010.