1. An Interpretation and Analysis of Recumbent Folded Deformed cross Bedding;Allen;Sedimentology,1972
2. Permian system of Colorado Plateau;Baars;AAPG Bull.,1962
3. Baars, D. L., Molenaar, C.M., 1971. Geology of Canyonlands and Cataract Canyon. 6th Field Four Corners Geol. Soc. Conference, Durango, Colorado, USA, 99.
4. Baars, D. L., 1975. The Permian System of Canyonlands country. In: Fassett, J.E. (Ed), Canyonlands Country. 8th Field Conference, Four Corners Geol. Soc. Guidebook, pp. 123-128.
5. Baars, D.L., 1979. The Permian System. In: Baars, D.L. (Ed), Permianland. 9th Field Conference, A Field Symposium, Four Corners Geol. Soc. Guidebook, pp. 1-6.