Jon, Won–Sok, To-Jun Ryang, and Hyon Hwangbo. 2024. “Cave Morphology and Moonmilk Deposits of Ryongmun Cavern, Democratic People’s Republic of Korea: A Study for the Conservation of Natural Heritage”. Acta Carsologica 53 (1). Ljubljana, Slovenija. https://doi.org/10.3986/ac.v53i1.12455.