References for the VLBA Measurements of Spacecraft at Planets

VLBI measurements of the Cassini spacecraft orbiting Saturn Jones, D. L., et al. : 2011, Very long baseline array astrometric observations of the Cassini spacecraft at Saturn, Astronomical Journal, 141, 29 (10 pp). Jones, D. L., et al. : Astrometry of Cassini with the VLBA to improve the Saturn Ephemeris, arXiv:1410.1067v12014,