Vierteljahrshefte zur Wirtschaftsforschung, Vol. 85 (2016), Iss. 3 : pp. 19–35 | First published online: October 03, 2017
Sozialer Fortschritt, Vol. 66 (2017), Iss. 12 : pp. 919–934 | First published online: February 16, 2018
