1. Kriti, Virmani, J., Dey, N., Kumar, V.: PCA-PNN and PCA-SVM based CAD systems for breast density classification. In: Hassanien, A.E., et al. (eds.) Applications of Intelligent Optimization in Biology and Medicine, vol. 96, pp. 159–180. Springer (2015)
2. Wolfe, J.N.: Breast patterns as an index of risk for developing breast cancer. Am. J. Roentgenol. 126(6), 1130–1137 (1976)
3. Blot, L., Zwiggelaar, R.: Background texture extraction for the classification of mammographic parenchymal patterns. In: Proceedings of Conference on Medical Image Understanding and Analysis, pp. 145–148 (2001)
4. Bosch, A., Munoz, X., Oliver, A., Marti, J.: Modeling and classifying breast tissue density in mammograms. In: Computer Vision and Pattern Recognition, IEEE Computer Society Conference, 2, pp. 1552–1558. IEEE Press, New York (2006)
5. Muhimmah, I., Zwiggelaar, R.: Mammographic density classification using multiresolution histogram information. In: Proceedings of 5th International IEEE Special Topic Conference on Information Technology in Biomedicine (ITAB), pp. 1–6. IEEE Press, New York (2006)