http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
improved error assessment for the GEM-T1 gravitational model
Also available via Internet from the NTRS web site. Address as of 11/28/08: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890016934%5F1989016934.pdf ; current access is available via PURL.
Microfiche. [Washington, D.C. : National Aeronautics and Space Administration], 1989. 2 microfiches : negative.
Includes bibliographical references (pages 123-125).
An improved error assessment for the GEM-T1 gravitational model.