László Márkus, Zsolt, and Balázs Wagner. “GUIDE@HAND: Digital GPS Based Audio Guide That Brings the Past to Life”. Digital Presentation and Preservation of Cultural and Scientific Heritage 1 (September 30, 2011): 15–25. Accessed June 16, 2024. https://dipp.math.bas.bg/dipp/article/view/dipp.2011.1.2.