1
by Lytras, Miltiadis
Published 2019
MDPI - Multidisciplinary Digital Publishing Institute

2
by Rittmann, Günter
Published 2014
Nomos Verlagsgesellschaft mbH & Co. KG

3
by Koschtial, Claudia
Published 2021
Springer Nature

5
by Smith, Matthew L.
Published 2020
The MIT Press