Bird, P., 2002, Stress direction history of the western United States and Mexico since 85 Ma, Tectonics, VOL. 21, NO. 3, doi:10.1029/2001TC001319, 2002.
Pilger, R. H., Jr. 1982, The origin of hotspot traces: evidence from eastern Australia, J. Geophys. Res., 87(B3), 1825–1834, doi:10.1029/JB087iB03p01825
