N. N. Mohd Hasri, N. H. Wen, C. W. Howe, M. S. Mohamad, S. Deris, and S. Kasim, “Improved Support Vector Machine Using Multiple SVM-RFE for Cancer Classification”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 7, no. 4-2, pp. 1589–1594, Sep. 2017.