Bhandari, Nikita, and Gagandeep Kaur. “Colorization of Grayscale Images Using KPE and LBG Vector Quantization Techniques”. International Journal of Computer Sciences and Engineering, vol. 4, no. 9, Nov. 2025, pp. 96-102, https://ijcse.isroset.org/index.php/j/article/view/1199.