Volume 8, Issue 2, December 2017, Pages 159-168
10.22075/ijnaa.2017.11600.1575
Perikles Papadopoulos; N.L. Matiadou
Volume 6, Issue 1, March 2015, Pages 85-95
10.22075/ijnaa.2015.220
P. Papadopoulos; N.L. Matiadou; A. Pappas