Prasuna, P., D. Ramadevi, and D. A. Vinay Babu. “A Two Level Approach to Discretize Cosmetic Data Using Rough Set Theory”. INTERNATIONAL JOURNAL OF COMPUTERS &Amp; TECHNOLOGY, vol. 14, no. 10, July 2015, pp. 6147-52, doi:10.24297/ijct.v14i10.1826.