1. K-Ar ages from volcanic rocks from the Central Pen˜a Blanca, Chihuahua, Mexico;Alba;Isochron West,1974
2. Electron spin resonance studies of doped synthetic kaolinite;Angel;I. Clay Miner.,1974
3. The reduced uraniferous mineralizations associated with the volcanic rocks of the Sierra Pen˜a Blanca (Chihuahua, Mexico);Aniel;Am. Miner.,1985
4. Color centers, associated rare-earth ions and the origin of coloration in natural fluorites;Bill;Phys. Chem. Miner.,1978
5. Structural characteristics of hematite and goethite and their relationships with kaolinite in a laterite from Cameroon. A TEM study;Boudeulle;Bull. Mineral.,1988