Sattraburut, Thunyapat, Yupa Thasod, Benjavun Ratanasthien, and Sirasit Vongvassana. 2024. “Characteristics and Mineralogy of Sediments in the Hongsa Lignite Deposit, Northwestern Laos”. Geologos 30 (3):171-94. https://doi.org/10.14746/logos.2024.30.3.17.