D. R. I. M. Setiadi, W. Warto, A. R. Muslikh, K. Nugroho, and A. N. Safriandono, “Aspect-Based Sentiment Analysis on E-commerce Reviews using BiGRU and Bi-Directional Attention Flow”, J. Comput. Theor. Appl., vol. 2, no. 4, pp. 470–480, Apr. 2025.