1. Bobalo, Y., Stakhiv, P., Mandziy, B., Shakhovska, N., Holoschuk, R.: The concept of electronic textbook “Fundamentals of theory of electronic circuits”. Przegląd Elektrotechniczny (Electrical Review). 88(3a), 16–18 (2012). http://pe.org.pl/articles/2012/3a/6.pdf . ISSN: 0033-2097
2. Holoschuk, R., Lytvyn, V., Chyrun, L., Vysotska, V.: Mathematical modeling of distance learning, series of information systems and network. J. Lviv Polytech. Natl. Univ. Lviv 489, 100–109 (2003)
3. Vysotska, V., Rishnyak, I., Chyrun, L.: Analysis and evaluation of risks in electronic commerce. In: 9th International Conference—The Experience of Designing and Applications of Lviv-Polyana, CAD Systems in Microelectronics. 24 February, pp. 332–333. http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=4297570&url=http%3A%2F%2Fieeexplore.ieee.org%2Fstamp%2Fstamp.jsp%3Ftp%3D%26arnumber%3D4297570 (2007)
4. Huang, W.H.-Y., Soman, D.: Gamification of Education. Research Report Series: Behavioural Economics in Action (2013)
5. Dicheva, D., Dichev, C., Agre, G., Angelova, G.: Gamification in education: a systematic mapping study. J. Educ. Technol. Soc. 18(3), 75–88 (2015)