Варненски свободен университет "Черноризец Храбър"
Bedri Gechbaia; et al. (2024)
Nikola Yankov (2023)
Konstantin Poudin (2019)
Tatiana Tomova (2019)
Maria Bakalova; Blaga Blagoeva (2019)
Daniela Nikolaeva Koch-Kozhuharova; Kalina Ishpekova-Bratanova (2019)