ESD Lab., Department of Mathematics, University of Patras, Greece
Dr Dimitris Kanellopoulos
Educational Software Development Laboratory (ESD Lab) Department of Mathematics University of Patras, Greece. GR 26500, Rio - Patras
Tel./fax: +30 2610 997833 ORCID: 0000-0002-4147-9295
d_kan2006@yahoo.gr
