Anand, Dr. Darpan. “Implementation and Analysis of Sentimental Analysis on Facial Expression Using HAAR Cascade Methods”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 2 (April 11, 2021): 2787–2793. Accessed May 6, 2024. https://turcomat.org/index.php/turkbilmat/article/view/2308.