1           2005-01-16.40  
 2           2005-01-30.27  
 3           1990-10-18.20  Hainaut-Rouelle et al. (1995) 
 4           1990-10-19.18  Hainaut-Rouelle et al. (1995) 
 5           1990-10-22.17  Hainaut-Rouelle et al. (1995) 
 6           1990-11-11.19  Schober et al. (1993) 
 7           1990-11-12.18  Schober et al. (1993) 
 8           1990-11-15.25  Schober et al. (1993) 
 9           1990-11-16.16  Schober et al. (1993) 
10           1990-11-17.14  Schober et al. (1993) 
11  1996-02-04--2011-06-05  Lowell