van Dam, T. ., Wahr, J. M., Chao, Y. ., & Leuliette, E. W. (1997). Predictions of crustal deformation and of geoid and sea-level variability caused by oceanic and atmospheric loading. Geophysical Journal International, 129, 507–517. http://doi.org/10.1111/j.1365-246X.1997.tb04490.x (Original work published June 1997)