Balaji, V, S Ravi, and P Naveen Chandran. “Optimization on Cryogenic Co2 Machining Parameters of AISI D2 Steel Using Taguchi Based Grey Relational Approach and TOPSIS”. International Journal of Engineering and Technology 7, no. 3.12 (July 20, 2018): 885–893. Accessed April 28, 2025. https://sciencepubco.com/index.php/IJET/article/view/16556.