BAROTO, Krishna Bayu; 						VALINKA, Elka Aaliyah; 						SAPUTRO, Dicky Aji.
 Rock Mass Classification on Opak Fault Impacted Zone in Mengger Hill, Bantul, Yogyakarta.
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Available at: &lt;<a href="https://jos.unsoed.ac.id/index.php/exj/article/view/18774" target="_new">https://jos.unsoed.ac.id/index.php/exj/article/view/18774</a>&gt;. Date accessed: 14 may 2026.