Fricke, H.C., Clyde, W.C., O\\\'Neil, J.R. & Gingerich, P.D. (1998) Evidence for rapid climate change in North America during the latest Paleocene thermal maximum: oxygen isotope compositions of biogenic phosphate from the Bighorn Basin (Wyoming) Earth Planet Sc Lett. 160:193–208.
Fricke, H. C. and Rogers, R. R. (2000). Multiple taxon-multiple locality approach to providing oxygen isotope evidence for warmblooded theropod dinosaurs. Geology 28: 799-802
Fricke, H.C. & Pearson, D.A. (2008) Stable isotope evidence for changes in dietary niche partitioning among hadrosaurian and ceratopsian dinosaurs of the Hell Creek Formation, North Dakota Paleobiology, 34(4), 2008, pp. 534–552
Fricke, H.C., Rogers, R..R., Backlund, R., Dwyer, C.N. & Echt, S. (2008) Preservation of primary stable isotope signals in dinosaur remains, and environmental gradients of the Late Cretaceous of Montana and Alberta. Palaeogeogr Palaeocl. 266:13–27.
Fricke, H. C., Rogers, R. R., and Gates, T. A. (2009) Hadrosaurid migration: inferences based on stable isotope comparisons among Late Cretaceous dinosaur localities: Paleobiology, v. 35, n. 2, p. 270-288
Fricke, H.C., Foreman, B.Z., and Sewall, J.O. (2010) Integrated climate model-oxygen isotope evidence for a North American monsoon during the Late Cretaceous. Earth and Planetary Science Letters 289(1-2):11-21. doi: 10.1016/j.epsl.2009.10.018.
Fricke, H. C. and Rogers, R. R. (2000). Multiple taxon-multiple locality approach to providing oxygen isotope evidence for warmblooded theropod dinosaurs. Geology 28: 799-802
Fricke, H.C. & Pearson, D.A. (2008) Stable isotope evidence for changes in dietary niche partitioning among hadrosaurian and ceratopsian dinosaurs of the Hell Creek Formation, North Dakota Paleobiology, 34(4), 2008, pp. 534–552
Fricke, H.C., Rogers, R..R., Backlund, R., Dwyer, C.N. & Echt, S. (2008) Preservation of primary stable isotope signals in dinosaur remains, and environmental gradients of the Late Cretaceous of Montana and Alberta. Palaeogeogr Palaeocl. 266:13–27.
Fricke, H. C., Rogers, R. R., and Gates, T. A. (2009) Hadrosaurid migration: inferences based on stable isotope comparisons among Late Cretaceous dinosaur localities: Paleobiology, v. 35, n. 2, p. 270-288
Fricke, H.C., Foreman, B.Z., and Sewall, J.O. (2010) Integrated climate model-oxygen isotope evidence for a North American monsoon during the Late Cretaceous. Earth and Planetary Science Letters 289(1-2):11-21. doi: 10.1016/j.epsl.2009.10.018.