1576-5962
1576-5962
S1576-59622020000200007
10.5093/jwop2020a14
Germany
00
00
2020
00
00
2020
36
2
147
156
[
2014
15
82-100
]
[
2013
30
1197-202
]
[
2014
31
1100-7
]
[
2000
25
472-92
]
[
2011
135
10-9
]
[
2014
30
259-64
]
[
1991
59
355-86
]
[
2018
36
153-74
]
[
2007
12
365-75
]
[
1998
]
[
2015
58
763-88
]
[
2014
13
53-75
]
[
2009
74
1
1
82-93
]
[
2000
53
747-70
]
[
2002
5
23-48
]
[
2015
7
67-77
]
[
2007
93
1080-107
]
[
1980
38
669-78
]
[
2003
88
160-9
]
[
2016
]
[
2014
63
411-40
]
[
2016
69
1045-68
]
[
2014
23
80-90
]
[
2014
19
74-84
]
[
2017
31
24-41
]
[
2016
23
276-97
]
[
2016
]
[
2011
40
1431-7
]
[
2012
71
21-8
]
[
2013
]
[
2017
98
39-57
]
[
2010
24
349-58
]
[
2008
1
33-43
]
[
1987
8
339-49
]
[
1988
41
313-21
]
[
2016
57
6
6
591-600
]
[
2001
15
83-104
]
[
2006
27
485-507
]
[
2018
7
]
[
1996
9
229-43
]
[
1981
2
99-113
]
[
1987
52
81-90
]
[
1991
69
367-72
]
[
2017
17
151-61
]
[
2018
2
9
]
[
2016
9
146-64
]
[
2016
16
29-47
]
[
2011
2
1-9
]
[
2016
2nd
]
[
2017
]
[
2019
]
[
2017
38
592-611
]
[
2016
57
54-60
]
[
2007
5
2
2
A71-7
]
[
1996
3rd
19-26
]
[
2007
12
204-21
]
[
2017
113
117-43
]
[
2020
51
37-47
]
[
2005
10
491-503
]
[
2011
16
441-56
]
[
2016
68
91-7
]
[
1996
18
1-74
]
[
2017
7
2072
]
[
2018
79
94-104
]