Agustin, Helfi, Muchamad Rifai, and Suryo Ediyono. 2022. “When Remaining Volcanic Eruptions Become Tourism Commodities: A Risk Analysis of Merapi Lava Tour Tourism Objects in Yogyakarta”. Jurnal Kesehatan Komunitas (Journal of Community Health) 8 (2):219-28. https://doi.org/10.25311/keskom.Vol8.Iss2.1077.