Poveda Pineda, William Steven, Carlos Andrés Arango Londoño, and Wilson Alexander Pinzón Rueda. 2018. “Technical Efficiency of the Potato Harvest in Boyacá, Colombia, Using Data Surround Analysis - DEA”. I+ T+ C- Research, Technology and Science 1 (12). Popayán, CO:29-38. https://revistas.unicomfacauca.edu.co/ojs/index.php/itc/article/view/itc2018_pag_29_38.