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J. GARBANZO-LEÓN, A. VEGA FERNÁNDEZ, M. VARELA SÁNCHEZ, J. P. SALVATIERRA, R. W. KINGDON, and O. H. LÜCKE, “A regional Stokes-Helmert geoid determination for Costa Rica (GCR-RSH-2020): computation and evaluation”, Contrib. Geophys. Geod., vol. 50, no. 2, pp. 223-247, Jul. 2020.