1  1965-06-20.64  Chang et al. (1981) 
 2  1965-06-20.74  Chang et al. (1981) 
 3  1965-06-20.84  Chang et al. (1981) 
 4  1965-06-20.79  Chang et al. (1981) 
 5  1975-11-27.97  Schober (1976) 
 6  1975-11-30.96  Schober (1976) 
 7  1975-12-01.83  Schober (1976) 
 8  1983-11-10.92  di Martino et al. (1987) 
 9  1983-11-11.11  di Martino et al. (1987) 
10  1985-03-23.92  Dotto et al. (1995) 
11  1985-03-24.89  Dotto et al. (1995) 
12  1987-10-26.19  Dotto et al. (1995) 
13  1987-10-27.17  Dotto et al. (1995) 
14  1987-11-20.82  Dotto et al. (1995) 
15  1989-02-25.13  Erikson et al. (1991) 
16  1989-02-26.11  Erikson et al. (1991) 
17  1989-02-27.10  Erikson et al. (1991) 
18  1989-03-01.11  Erikson et al. (1991)