Vinogradov, S. V., Ponte, R. ., Heimbach, P. ., & Wunsch, C. . (2008). The mean seasonal cycle in sea level estimated from a data-constrained general circulation model. Journal of Geophysical Research (Oceans), 113, 03032. http://doi.org/10.1029/2007JC004496 (Original work published March 2008)