Permadi, V.A., Ahmad, T. and Santoso, B.J. (2018) “DATA REFINEMENT APPROACH FOR ANSWERING WHY-NOT PROBLEM OVER K-MOST PROMISING PRODUCT (K-MPP) QUERIES”, JUTI: Jurnal Ilmiah Teknologi Informasi, 16(2), pp. 171–180. doi:10.12962/j24068535.v16i2.a754.