__Gravity Data__

Mars gravity spherical-harmonic coefficients are from the SHADR link at the PDS link 
	http://pds-geosciences.wustl.edu/missions/mro/gravity.htm

The relevant files are
	jgmro_095a_sha.lbl.txt
	jgmro_095a_sha.tab

The recommended citation is:
	Zuber, M., Mars Reconnaissance Orbiter Derived Gravity Data, NASA Planetary 
	Data System, MRO-M-RSS-5-SDP-V1.0, 2008.

__Surface Radius Data__

Mars surface radius spherical-harmonic coefficients are from the PDS link
	http://pds-geosciences.wustl.edu/missions/mgs/shadr.html

The relevant files are
	gtm090aa_lbl.txt
	gtm090aa_sha.txt

The recommended citation is:
	MOLA and the PDS archive (need a better citation)
