1
by Hashemi, Shervin
Published 2021
MDPI - Multidisciplinary Digital Publishing Institute

2
by Pütter, Judith Maja
Published 2017
Nomos Verlagsgesellschaft mbH & Co. KG

3
Published 2015
OECD Publishing

7
by Lytras, Miltiadis
Published 2019
MDPI - Multidisciplinary Digital Publishing Institute

8
by Yigitcanlar, Tan
Published 2019
MDPI - Multidisciplinary Digital Publishing Institute

11
by Breyer-Mayländer, Thomas
Published 2018
Nomos Verlagsgesellschaft mbH & Co. KG

14
Published 2017
OECD Publishing

15
by Schwedes, Oliver
Published 2021
transcript Verlag