Determination of the Ash and Moisture Content of Mineral Coals by Neutron Slow-Down . Hungarian Journal of Industry and Chemistry, [S. l.], v. 1, n. 4, p. 563–576, 1973. DOI: 10.1515/553. Disponível em: https://hjic.mk.uni-pannon.hu/index.php/hjic/article/view/553. Acesso em: 16 feb. 2025.