SHABIRUDDIN, Shabiruddin; ANSHARIAH, Anshariah; BAKRI, Hasbi. Calculation of PIT 4 Coal Reserves with Cross-Cross Method. Journal of Geology and Exploration, [S. l.], v. 1, n. 1, p. 13–17, 2022. DOI: 10.58227/jge.v1i1.4. Disponível em: https://ejournal.insightpublisher.com/index.php/JGE/article/view/4. Acesso em: 23 dec. 2025.