Applied Economics Quarterly, Vol. 65 (2019), Iss. 3 : pp. 209–235 | First published online: October 21, 2020
Sozialer Fortschritt, Vol. 70 (2021), Iss. 1 : pp. 3–18 | First published online: January 28, 2021
Sozialer Fortschritt, Vol. 70 (2021), Iss. 10–11 : pp. 651–669 | First published online: November 11, 2021
Sozialer Fortschritt, Vol. 68 (2019), Iss. 11 : pp. 887–901 | First published online: November 15, 2019