1. K-Ar ages from volcanic rocks from the Central Pena Blanca, Chihuahua, Mexico;Alba;Isochron West,1974
2. Les gisements uranifères associés au volcanisme acide tertiaire de la Sierra Pena Blanca (Chihuahua, Mexico);Aniel;Géol. Géochim. Uranium, Mém. Nancy,1983
3. The reduced uraniferous mineralizations associated with the volcanic rocks of the Sierra Pena Blanca (Chihuahua, Mexico);Aniel;Am. Mineral.,1985
4. Estudio genetico del yacimiento uranifero Aguiliri, Puna, Argentina;Aniel,1987
5. Mineralizacion de uranio en rocas volcanicas terciarias de la formacion Los Frailes, Bolivia;Aparicio,1981