Agustin, H. et al. 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 (Jul. 2022), 219–228. DOI:https://doi.org/10.25311/keskom.Vol8.Iss2.1077.