1. Adams, A.E. and Mackenzie, W.S. (1998): A colour atlas of Carbonate Sediments and Rocks under the microscope.—180 p., Manson Publishing, Barcelona
2. Allen, M.B., Windley, B.F. and Zhang, C. (1992): Paleozoic collisional tectonics and magmatism of the Chinese Tien Shan, central Asia.—Tectonophysics, 220, 251–267, Amsterdam
3. Babcock, J.A. (1977): Calcareous algae, organic boundstone, and the genesis of the Upper Capitan Limestone (Permian, Guadalupian), Guadalupe Mountains, New Mexico, and West Texas.—In: Hileman, M.E. and Mazzulo, S.J. (eds.): Upper Guadalupian facies, Permian reef complex, Guadalupe Mountains, New Mexico and West Texas.—Soc. Eco. Paleontol. Mineral., Permian Basin Section, Publ., 77–160, 3–44, Tulsa
4. Babcock, J.A. (1986): The puzzle of alga-like problematica, or rummaging around in the algal wastebasket.—In: Hoffman, A. and Nitecki, M.H. (eds.): Problematic Fossil Taxa,—12–26. Oxford University Press, New York.
5. Babcock, J.A. and Yurewicz, D.A. (1989): The Massivo facies of the Capitan Limestone, Guadalupe Mountains, Texas and New Mexico.—In: Harris, P.M. and Grover, G.A. (eds.): Subsurface and Outcrop Examination of the Capitan Shelf Margin, Northern Delware Basin.—Soc. Econ. Paleontol. Mineral. Core Workshop, 13, 365–371, Tulsa