The Use of Technology to Support Learning at Western Region Colleges, UAE. - Ghassan Frache; George S. Tombras; Kostas Stavropoulos; Gratchia Mkrttchian (EDUCON, 2019)

Research and Categorization of Conceptual Difficulties in Electricity's Concepts and Basic Laws. - Ghassan Frache; Gerasimos Vavasis; Gratchia Mkrttchian; K. Stavropoulos; Efstratios C. Kapotis; Hector E. Nistazakis; George S. Tombras (EDUCON, 2019)

An Empirical Expression for Attenuation Coefficient Evaluation of FSO Links During Night-Time Over Maritime Area of Piraeus Port in Greece. - A. N. Stassinakis; Hector E. Nistazakis; E. V. Chatzikontis; George D. Roumelas; George S. Tombras; Antreas D. Tsigopoulos; Gratchia Mkrttchian (MOCAST, 2020)