5
by Campos Boralevi, Lea
Published 2010
Firenze University Press

15
by Talluri, Lorenzo
Published 2020
Firenze University Press

16
by Mann, Stefan
Published 2018
Springer Nature

18
by Leventakis, Georgios
Published 2018
Springer Nature

20
by Gössling, Stefan
Published 2006
Taylor & Francis