1  1989-09-05--1989-09-08  Wisniewski et al. (1997) 
 2  1989-10-07--1989-10-08  Wisniewski et al. (1997) 
 3           1989-10-06.75  Velichko et al. (1989) 
 4           1989-10-11.15  Hoffmann et al. (1993) 
 5  1995-05-30--1995-05-31  Erikson et al. (2000) 
 6           2008-08-02.08  Rożek et al. (2019) 
 7           2008-08-05.08  Rożek et al. (2019) 
 8           2008-08-07.07  Rożek et al. (2019) 
 9           2010-04-05.34  Rożek et al. (2019) 
10           2010-04-07.20  Rożek et al. (2019) 
11           2011-06-28.40  Rożek et al. (2019) 
12           2011-06-29.40  Rożek et al. (2019) 
13           2011-08-29.03  Rożek et al. (2019) 
14           2011-08-31.20  Rożek et al. (2019) 
15           2011-09-01.21  Rożek et al. (2019) 
16           2011-09-02.02  Rożek et al. (2019) 
17           2011-10-19.15  Rożek et al. (2019) 
18           2011-10-20.14  Rożek et al. (2019) 
19           2011-11-04.05  Rożek et al. (2019) 
20           2011-12-02.08  Rożek et al. (2019) 
21           2011-12-03.07  Rożek et al. (2019) 
22           2012-01-02.13  Rożek et al. (2019) 
23           2012-01-07.08  Rożek et al. (2019) 
24           2012-01-13.05  Rożek et al. (2019) 
25           2012-01-21.08  Rożek et al. (2019) 
26           2012-02-25.07  Rożek et al. (2019) 
27           2012-02-27.06  Rożek et al. (2019) 
28  2013-02-05--2013-02-06  Rożek et al. (2019) 
29           2013-04-16.17  Rożek et al. (2019) 
30           2013-05-04.22  Rożek et al. (2019)