Arias Cuéllar, Alexander, Joao L. Ealo Cuello, and Eduardo Caicedo. “desing,assembling,and Calibration of a Photogoniometer for the Colombian Luminaries Manufacturer Roy alpha,inc”. Ingeniería y Competitividad 9, no. 1 (January 8, 2007): 45–56. Accessed November 22, 2024. https://revistaingenieria.univalle.edu.co/index.php/ingenieria_y_competitividad/article/view/2494.