KEAWPIBAL, Naphat, Ladda PREECHAVEERAKUL, and Sirirut VANICHAYOBON. “Optimizing Range Query Processing for Dual Bitmap Index”. Walailak Journal of Science and Technology (WJST) 16, no. 2 (March 26, 2018): 133–142. Accessed April 29, 2024. https://wjst.wu.ac.th/index.php/wjst/article/view/4146.