1. Tectonic polish of pebbles;Clifton;J. Sediment. Petrol.,1965
2. Alluvial fans in the Death Valley region, California and Nevada;Denny;U.S. Geol. Surv., Prof. Pap.,1965
3. Early Cenozoic vertebrate paleontology, sedimentation and orogeny in Central Wyoming;Dorr;Bull. Geol. Soc. Am.,1958
4. La evolucion estructural de los Andes mas septentrionales de Colombia;Irving;Bol. Geol., Inst. Nac. Invest. Geol.—Mineras (Colomb.),1971