Shabani, Farzaneh, Sara Najafzadeh, y Mehrdad Maeen. 2017. «An Improved Model for OKP Product Planning Stage in a Cloud-Based Design Environment». Revista Publicando 4 (13 (3). "Quito, Ecuador":601-20. https://revistapublicando.org/revista/index.php/crv/article/view/877.