Management 2012 : research in management and business in the light of practical needs [proceedings from IV. international scientific conference (1st announcement), Nový Smokovec 4th - 6th October 2012] : on the occasion of the 15th anniversary of the University of Prešov in Prešov and the 8th anniversary of the Faculty of Management of University of Prešov in Prešov - Štefko, Róbert; Frankovský, Miroslav; Vravec, Ján (Bookman, 2012)