ČERVENKA, Peter - JURKOVIČOVÁ, Lujza. Basic Attention Token and Its Use in Digital Marketing. In Trends and Challenges in the European Business Environment: Trade, International Business and Tourism. International Scientific Conference. Trends and Challenges in the European Business Environment: Trade, International Business and Tourism : Proceedings of the 6th International Scientific Conference, October 17 - 18, 2019 (Mojmírovce, Slovak Republic). - Bratislava : Vydavateľstvo EKONÓM, 2019. ISBN 978-80-225-4646-1, pp. 29-39 CD-ROM.

1965 ,No. 7-12. Mirovaja ekonomika i meždunarodnyje otnošenija. Moskva : Pravda, 1965. 1 zv. Mesačník. ISSN 0131-2227 [Copy count : 1, currently available 0, at library only 1]