Cápay, Martin 9th International Scientific Conference on Distance Learning in Applied Informatics Conference : Proceedings, DIVAI 2012; Štúrovo, Slovakia; 2-4 May 2012. -- Nitra : Univerzita Konštantína Filozofa v Nitre, 2012. -- ISBN : 978-80-558-0092-9. Mésarošová, Miroslava. Palmárová, Viera