Sahagún Sánchez, F. J., Castro Navarro, J. and Reyes Hernández, H. (2013) “Geographic distribution of birds in the Sierra Madre Oriental of San Luis Potosí, México: a regional analysis of conservation status”, Revista de Biología Tropical, 61(2), pp. 897–925. doi: 10.15517/rbt.v61i2.11233.