NOEV, N.; VALEV, I.; KANCHEVA, S.; SAPUNDJIEV, V. A Model of Content Structure for a Serious Educational Game Related to the Military and Historical Heritage Presented through the “Mission Opalchenets”. Digital Presentation and Preservation of Cultural and Scientific Heritage, [S. l.], v. 8, p. 151–158, 2018. DOI: 10.55630/dipp.2018.8.13. Disponível em: https://dipp.math.bas.bg/dipp/article/view/dipp.2018.8.13. Acesso em: 2 may. 2024.