Nurkhamim, Nurkhamim, 		Idrus, Arifudin, 		Harijoko, Agung, 		Endrayanto, Irwan, AND 		Putranto, Sapto.
" Quantification Model of Qualitative Geological Data Variables for Exploration Risk Assessment  in Prospect Cu-Au Porphyry Deposit Randu Kuning, Wonogiri, Central Java" <em>UNEJ e-Proceeding</em> [Online], (8 August 2017)