1. Faculty of Computer Science and Engineering, Ss. Cyril and Methodius University, 1000 Skopje, North Macedonia
2. CODECHEM GmbH, Mainzer Landstr. 351, 60326 Frankfurt am Main, Germany
3. OpenLink Software Ltd., Croydon, Surrey CR0 0XZ, UK
4. Department of Computer Science, Metropolitan College, Boston University, Boston, MA 02215, USA