PDS_VERSION_ID = PDS3                                                         
                                                                              
OBJECT     = REFERENCE                                                        
  REFERENCE_KEY_ID = "COCHRANETAL1992"                                        
  REFERENCE_DESC   = "Cochran, A.L., E.S.Barker, and A.D.Storrs,              
    The McDonald Observatory Faint Comet Survey: Gas Production in            
    17 Comets, Icarus, 98, 151, 1992."                                        
END_OBJECT = REFERENCE                                                        
                                                                              
OBJECT     = REFERENCE                                                        
  REFERENCE_KEY_ID = "COCHRAN&BARKER1999"                                     
  REFERENCE_DESC   = "Cochran, A.L. and E.S. Barker, McDonald Observatory     
    Spectral Observations of Comet 19P/Borrelly, Icarus, 141, 307, 1999."     
END_OBJECT = REFERENCE                                                        
                                                                              
OBJECT     = REFERENCE                                                        
  REFERENCE_KEY_ID = "ARVESENETAL1969"                                        
  REFERENCE_DESC   = "Arvesen, J.C., R.J. Griffin, Jr., and B.D. Pearson, Jr.,
    Determination of extraterrestrial solar spectra irradiance from a research
    aircraft. Appl. Opt. 8, 2215-2232, 1969."                                 
END_OBJECT = REFERENCE                                                        
                                                                              
END