Dhea Ameila Pratiwi, Akhmad Zamroni, and Ani Apriani. “Lithofacies Recurrence Analysis Using Markov Chain Method in Semilir Formation, Ngoro-Oro, Gunungkidul”. ReTII (November 14, 2024): 313 -. Accessed November 20, 2024. //journal.itny.ac.id/index.php/ReTII/article/view/5513.