1. Definition of Functionals of the Geopotential and Their Calculation from Spherical Harmonic Models: Theory and Formulas Used by the Calculation Service of the International Centre for Global Earth Models (ICGEM);Barthelmes,2013
2. International centre for global earth models (ICGEM);Barthelmes,2016
3. CSR GRACE Release-05 Data Products: Status & Assessments;Bettadpur,2013
4. Geoid Undulations Computed from EGM96;Borre,2008
5. On the computation of derivatives of Legendre functions;Bosch;Phys. Chem. Earth Solid Earth Geodes.,2000