1. Aharon, P. (1994): Geology and biology of modern and ancient submarine hydrocarbon seeps and vents: An introduction.— Geo-Marine Letters,14, 69–73, Stroudsburg
2. Ahr, W.M. (1989): Sedimentary and tectonic controls on the development of an Early Mississippian carbonate ramp. Sacramento Mountains area, New Mexico.—Soc. Econ. Paleont. Min., Spec. Publ.,44, 203–212, Tulsa
3. Ahr, W.M. &Stanton, R.J., Jr. (1994): Comparative sedimentology and paleontology of Waulsortian mounds and coeval level-bottom sediments of the lower Lake Valley Formation (Lower Mississippian) in the Sacramento Mountains (New Mexico, USA).—Abh. Geol. Bundesanst.50, 11–24, Wien
4. Ahr, W.M. & Stanton, R.J., Jr. (1996): Constituent composition of Early Mississippian carbonate buildups and their level-bottom equivalents, Sacramento Mountains, New Mexico.—In:Strogen, P., Somerville, I.D. & Jones, G. Ll. (eds.): Recent advances in Lower Carboniferous geology.—Geol. Soc. London Spec. Publ.,107, 83–95, London
5. Ahr, W.M. & Stanton, R.J., Jr. (1997): Mississippian ‘reef’ reservoirs: Seep/vent related or not? Amer. Ass. Petrol. Geol. Ann. Meeting Prog., 6, A1, Tulsa