2016:
soep-core-2016-e2/112017:
soep-core-2017-e2/112020:
soep-core-2020-e2-3/112021:
soep-core-2021-e2-2/112022:
soep-core-2022-ki-2/21 soep-core-2022-ki-m3456/21
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