COLMENERO SUJO, Luis Humberto; VILLALBA, María de Lourdes; RUBIO ARIAS, Héctor; MONTERO CABRERA, María; SILVA HIDALGO, Humberto. NORM determination in urban soils from selected cities in Chihuahua, Mexico. Acta Universitaria, [S. l.], v. 26, n. 2, p. 36–42, 2016. DOI: 10.15174/au.2016.939. Disponível em: https://www.actauniversitaria.ugto.mx/index.php/acta/article/view/939. Acesso em: 6 may. 2026.