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  REFERENCE_KEY_ID                 = "BOTTKEETAL2001"                         
  REFERENCE_DESC                   = "Bottke, W.F., D. Vokrouhlicky, M. Broz, 
        D. Nesvorny, and A. Morbidelli, Dynamical Spreading of Asteroid       
        Families via the Yarkovsky Effect, Science 294, 1693-1696, 2001."     
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  REFERENCE_KEY_ID                 = "DAVISETAL2002"                          
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  REFERENCE_KEY_ID                 = "HIRAYAMA1918"                           
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  REFERENCE_KEY_ID                 = "MILANI&KNEZEVIC1994"                    
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END