Author: Marius Spechea

Anamaria HAPA (1)

Lucian Blaga University of Sibiu, Romania

Nicoleta Annemarie Munteanu (2)

Lucian Blaga University of Sibiu, Romania

Dorel DANCIU

Babeș-Bolyai University of Cluj-Napoca, Romania

Iustin-Florin VANCEA

Lucian Blaga University of Sibiu, Romania

Mihai MELINTEI (1)

Lucian Blaga University of Sibiu

Olga STATE (2)

Lucian Blaga University of Sibiu

Emilia TOMESCU (1)

Lucian Blaga University of Sibiu

Silvia STATE (2)

Lucian Blaga University of Sibiu

Laila ALGALAl (1)

Jilin University, China

Chen XI (2)Jilin University, China 

Cristina ONEŢ (1)

Lucian Blaga University of Sibiu, Romania

Ciprian FLOREA (2)

Lucian Blaga University of Sibiu, Romania

Mihai MELINTEI

Lucian Blaga University of Sibiu, Romania

Francis Kwesi KYIREWIAH (1)

Takoradi Technical University, Ghana                                                                     

Emmanuel Yaw ATTAH (2)

Takoradi Technical University, Ghana

Alexandra PORUMBESCU

University of Craiova, Romania