Cabrera-Román, J. et al. 2019. Ñadó volcanic complex, north of Acambay graben: evidence of Oligocene magmatism and its relation with the central sector of the Trans-Mexican Volcanic Belt: Español. Revista Mexicana de Ciencias Geológicas. 36, 1 (Mar. 2019), 76–94. DOI:https://doi.org/10.22201/cgeo.20072902e.2019.1.778.