1           1976-12-12.97  Scaltriti & Zappala (1978) 
 2           1981-03-11.18  Debehogne et al. (1982) 
 3           1981-03-12.21  Debehogne et al. (1982) 
 4           1981-03-13.23  Debehogne et al. (1982) 
 5           1981-03-14.24  
 6           1981-03-15.20  Debehogne et al. (1982) 
 7           1993-07-13.24  
 8           1993-07-15.21  Hainaut-Rouelle et al. (1995) 
 9           1993-07-20.21  Hainaut-Rouelle et al. (1995) 
10  1997-10-19--2011-08-04  Lowell