Sosa López, Arturo Abraham, Adán Flores Balderas, Mónica Trejo Durán, and Edgar Alvarado Méndez. 2016. “Three-Dimensional Volumetric Coordinate System Through the Use of Light-Emitting-Diodes (LEDs) and Microcontrollers”. Acta Universitaria 26 (March): 35-38. https://doi.org/10.15174/au.2016.931.