Peter C. Thomas; =Michael J.S. Belton; B. Carcich; Clark R. Chapman; M.E. Davies; Robert J. Sullivan; Joseph Veverka (1996). «The shape of Ida». Icarus120 (1): 20–32. doi:10.1006/icar.1996.0033. Bibcode: 1996Icar..120...20T.
Peter C. Thomas; =Michael J.S. Belton; B. Carcich; Clark R. Chapman; M.E. Davies; Robert J. Sullivan; Joseph Veverka (1996). «The shape of Ida». Icarus120 (1): 20–32. doi:10.1006/icar.1996.0033. Bibcode: 1996Icar..120...20T.