3
by Liebold, Sebastian
Published 2017
Nomos Verlagsgesellschaft mbH & Co. KG

4
by Hauff, Michael von
Published 2018
Nomos Verlagsgesellschaft mbH & Co. KG

6
Published 2017
OECD Publishing

7
Published 2017
OECD Publishing

11
Published 2021
OECD Publishing

12
Published 2022
OECD Publishing

14
by Lytras, Miltiadis
Published 2019
MDPI - Multidisciplinary Digital Publishing Institute

17
by Mieg, Harald A.
Published 2022
MDPI - Multidisciplinary Digital Publishing Institute

20
by D'Adamo, Idiano
Published 2021
MDPI - Multidisciplinary Digital Publishing Institute