IHALAINEN, P. E.; UUSINOKA, R. P. J. Aggregate and environment. Journal of Nepal Geological Society, [S. l.], v. 22, p. 31–34, 2000. DOI: 10.3126/jngs.v22i0.32304. Disponível em: https://nepjol.info/index.php/JNGS/article/view/32304. Acesso em: 17 aug. 2024.