G. Costa
发表
G. Tzetzis,
E. Tsitskari,
N. Vernadakis,
2009
.
Anthopoulos K. Petros,
G. Costa,
2011
.
K. Alexandris,
E. Tsitskari,
G. Costa,
2011
.
G. Tzetzis,
O. Matsouka,
I. Trigonis,
2008
.
G. Costa,
V. Kalaitzidis,
2008
.
Georgia Yfantidou,
G. Costa,
M. Michalopoulos,
2008
.
M. Michalopoulou,
Georgia Yfantidou,
G. Costa,
2011
.
G. Mavrommatis,
P. Papageorgiou,
G. Costa,
2008
.
Location and Activities That Eco-Tourists Prefer in Greece. the Case of Eastern Macedonia and Thrace
G. Tzetzis,
Georgia Yfantidou,
E. Tsitskari,
2016
.
E. Tsitskari,
G. Costa,
C. Antoniadis,
2014
.
A. Koustelios,
G. Costa,
E. Zournatzi,
2015
.
G. Costa,
Konstantinos Astrapellos,
Xanthi Astrapellou,
2010
.
Georgia Yfantidou,
G. Costa,
Antonios Dalakis,
2019,
Smart Tourism as a Driver for Culture and Sustainability.
P. Antoniou,
M. Goudas,
G. Costa,
2004
.
C. Kouthouris,
Michela Matarazzo,
Georgia Yfantidou,
2017
.
G. Costa,
Eleni Glinia,
2004
.
Georgia Yfantidou,
G. Costa,
Antonios Dalakis,
2018
.
George Mavrommatis,
Panagiota Papageorgiou,
George Costa,
2009
.
G. Tzetzis,
E. Tsitskari,
N. Vernadakis,
2008
.
G. Tzetzis,
M. Goudas,
E. Tsitskari,
2004
.
Georgia Yfantidou,
G. Costa,
Maria Michalopoulo,
2009
.