PETRUŠKA, Igor - HORVÁTHOVÁ, Diana. A comparison of sources healthcare financing in EU and selected countries. In Quality and leading innovation. International scientific conference. Quality and leading innovation II. : proceedings : international scientific conference : 27. - 29. september 2016, Košice (SK), Uzhgorod (UA). - Košice ; Uzgorod : Faculty of Business Economics with seat in Košice : Uzgorod National University, 2016. ISBN 978-617-589-123-0, s. 100-107 CD-ROM.