Li Liang, Ligu Zhu, Wenqian Shang, Dongyu Feng y Zida Xiao, “Express supervision system based on NodeJS and MongoDB,” International Journal of Innovative Technology and Exploring Engineering, 2017. doi: 10.1109/ICIS.2017.7960064. [Online]. Disponible en https://ieeexplore.ieee.org/document/7960064.