The Scientific Use Files of the German Survey of Volunteering, processed by the FDZ-DZA, are now only available through GESIS Leibniz Institute for the Social Sciences. They will be provided there, along with all documentation materials, for scientific use under the following study numbers and DOIs:
- ZA3350: German Survey of Volunteering 1999, http://dx.doi.org/10.4232/1.14128
- ZA4331: German Survey of Volunteering 2004, http://dx.doi.org/10.4232/1.14129
- ZA5433: German Survey of Volunteering 2009, http://dx.doi.org/10.4232/1.14130
- ZA5713: German Survey of Volunteering 2014, http://dx.doi.org/10.4232/1.14131
- ZA5714: German Survey of Volunteering 2019, http://dx.doi.org/10.4232/1.14132
- ZA5715: Trend Study of the German Survey of Volunteering 1999–2014, dx.doi.org/10.4232/1.14133