Reference

Hafidz Noor Fikri, Reinhard F. Sachsenhofer, Achim Bechtel, Doris Gross (2023): Organic geochemistry and petrography of Miocene ombrotrophic coals in the tropical Asem-Asem Basin (Kalimantan, Indonesia): Comparison to coeval subtropical coals in the Eastern Alps – Austrian Journal of Earth Sciences – 116: 85 - 107.