Pujiyanto, Eko, Ryan Dwi Yuliastomo, and Retno Wulan Damayanti. 2018. “USING TAGUCHI, PCR-TOPSIS AND GENETIC ALGORITHM TO OPTIMISE OF DIAMETRAL TENSILE STRENGTH AND DENSITY OF PMMA-ZIRCONIA COMPOSITE”. Jurnal Mekanikal 39 (2). https://jurnalmekanikal.utm.my/index.php/jurnalmekanikal/article/view/8.