Martínez-Guerra, R., Pérez-Pinacho, C. A., Gómez-Cortés, G., Cruz-Victoria, J. and Mata-Machuca, J. L. (2014) “Experimental Synchronization by Means of Observers”, Journal of Applied Research and Technology, 12(1). doi: 10.22201/icat.16656423.2014.12.1.252.