Baer، James؛ Steven R. Chesley (2008). "Astrometric masses of 21 asteroids, and an integrated asteroid ephemeris". Celestial Mechanics and Dynamical Astronomy. Springer Science+Business Media B.V. 2007. ج. 100 ع. 2008: 27–42. Bibcode:2008CeMDA.100...27B. DOI:10.1007/s10569-007-9103-8.
Baer، James؛ Steven R. Chesley (2008). "Astrometric masses of 21 asteroids, and an integrated asteroid ephemeris". Celestial Mechanics and Dynamical Astronomy. Springer Science+Business Media B.V. 2007. ج. 100 ع. 2008: 27–42. Bibcode:2008CeMDA.100...27B. DOI:10.1007/s10569-007-9103-8.