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 26 500, Rio, Patras
Tel./fax: +30 2610 997833 ORCID: 0000-0002-4147-9295
d_kan2006@yahoo.gr
