Analyzing Customer Satisfaction Level on Telecommunication Usage Using Big Data. International Journal of Engineering and Computer Science, india, v. 12, n. 09, p. 25801–25808, 2023. DOI: 10.18535/ijecs/v12i09.4757. Disponível em: http://ijecs.in/index.php/ijecs/article/view/4757. Acesso em: 11 apr. 2025.