1
by Gumpel, Werner
Published 1986
Selbstverl. d. Südosteuropa-Ges.

5
by Yigitcanlar, Tan
Published 2019
MDPI - Multidisciplinary Digital Publishing Institute

6
Published 1975
Graduate Institute Publications

7
by Armand D. Roth
Published 1992
Graduate Institute Publications

8
by Bryan Evans and Ingo Schmidt
Published 2012
Athabasca University Press

9
by Van Oel, Pieter
Published 2019
MDPI - Multidisciplinary Digital Publishing Institute

10
by Philippe Régnier
Published 1987
Graduate Institute Publications

13
by Takagi, Yusuke
Published 2019
Springer Nature

14
by Róna, Peter
Published 2020
Springer Nature

15
by Vogiatzakis, Ioannis N.
Published 2020
MDPI - Multidisciplinary Digital Publishing Institute

16
Published 2002
Graduate Institute Publications

17
by Richter, Carola
Published 2021
Open Book Publishers

18
by Nayyar, Deepak
Published 2019
Oxford University Press