Belton, M. J. S.; Chapman, C. R.; Thomas, P. C.; Davies, M. E.; Greenberg, R.; Klaasen, K.; एवं अन्य (1995). "Bulk density of asteroid 243 Ida from the orbit of its satellite Dactyl". Nature. 374 (6525): 785–788. S2CID4333634. डीओआइ:10.1038/374785a0. बिबकोड:1995Natur.374..785B.
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Belton, M. J. S.; Chapman, C. R.; Thomas, P. C.; Davies, M. E.; Greenberg, R.; Klaasen, K.; एवं अन्य (1995). "Bulk density of asteroid 243 Ida from the orbit of its satellite Dactyl". Nature. 374 (6525): 785–788. S2CID4333634. डीओआइ:10.1038/374785a0. बिबकोड:1995Natur.374..785B.
Belton, M. J. S.; Chapman, C. R.; Thomas, P. C.; Davies, M. E.; Greenberg, R.; Klaasen, K.; एवं अन्य (1995). "Bulk density of asteroid 243 Ida from the orbit of its satellite Dactyl". Nature. 374 (6525): 785–788. S2CID4333634. डीओआइ:10.1038/374785a0. बिबकोड:1995Natur.374..785B.