1. Abramowitz M, Stegun IA (1964) Handbook of mathematical functions with formulas, graphs, and mathematical tables. Dover, New York
2. Bosch W (2000) On the computation of derivatives of Legendre functions. Phys Chem Earth(A) 25: 655–659
3. Claessens SJ (2006) Solutions to ellipsoidal boundary value problems for gravity field modelling. PhD thesis, Curtin University of Technology, Department of Spatial Science, Perth
4. Eshagh M (2009) Impact of vectorization on global synthesis and analysis in gradiometry. Acta Geod Geophys Hung 44: 323–342
5. Gleason DM (1988) Comparing ellipsoidal corrections to the transformation between the geopotential’s spherical and ellipsoidal spectrums. Manuscripta Geodaetica 13: 114–129