0872-1904
0872-1904
S0872-19042022000500337
10.4152/pea.2022400502
South Africa
30
10
2022
30
10
2022
40
5
337
346
[
2018
764
845852
]
[
2019
777
180-9
]
[
2018
20
654
]
[
2018
98
45
]
[
2019
]
[
2012
36
854-8
]
[
2012
132
233-8
]
[
2017
396
1420-6
]
[
2013
]
[
2018
36
5
5
643-54
]
[
2018
769
817-23
]
[
2019
]
[
2018
97
5-8
5-8
2341-50
]
[
2018
25
06
06
1950005
]
[
2019
81
32-8
]
[
2019
759
380-90
]
[
2018
]
[
2019
161
143-0
]
[
2019
161
1629-35
]
[
2017
689
384-94
]
[
2019
742
114
]
[
2019
157
426-71
]
[
2017
695
2945-50
]
[
2018
150
84-95
]
[
2014
44
37-43
]
[
2020
]
[
Dlouhý A.Somsen C
2013
61
15
15
5743-55
]
[
2019
]
[
2017
679
299-313
]
[
2014
4
2
2
57-62
]
[
2018
1-21
]
[
2014
238
9-14
]
[
2010
52
3
3
1026-34
]
[
2015
633
184-93
]
[
2005
47
9
9
2257-79
]