Nikitha G N, Chandana C, Neelashree N, Nisargapriya J, and Vishwesh J. “Bank Customer Complaints Analysis Using Natural Language Processing and Data Mining”. International Journal of Progressive Research in Science and Engineering, vol. 1, no. 3, June 2020, pp. 22-25, https://journal.ijprse.com/index.php/ijprse/article/view/35.