JANKOVIČ, Patrik. Mobile Internet Before Fifth Generation Cellular Systems (5G) (Determinants of Internet Coverage and Its Quality). In EDAMBA 2019. International Scientific Conference for Doctoral Students and Post-Doctoral Scholars. EDAMBA 2019 : International Scientific Conference for Doctoral Students and Post-Doctoral Scholars. - Bratislava : Vydavateľstvo EKONÓM, 2020. ISBN 978-80-225-4704-8, pp. 226-236 online.