G. Subash Kumar, T., and V. Nagarajan. “Nonlinear Local Contourlet Energy Pattern for Image Retrieval Applications”. International Journal of Engineering and Technology 7, no. 4 (March 12, 2019): 5072–5077. Accessed August 17, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/16832.