Deborah A. Garrahy - Illinois State University, USA

Yoshinori Okade - University of Tsukuba, Japan

Eid Luca - National School Agency-MIUR, Italy

Manual Vizuete Carizzosa - Extremadura University, Spain

Jaume Cantallops Ramon - University of Balearic Islands, Spain

Barbara Woynarowska - Warsaw University, Poland

Udo Hanke - University of Koblenz-Landau, Germany

Pere A. Borras - Balearic Island University, Spain