Administrative and territorial structure of the republic of Bulgaria act, Prom. SG. 63/14 Jul 1995. [Online] Available from: https://www.mrrb.bg/en/administrative-and-territorial-structure- of-the-republic-of-bulgaria-act/ [Accessed 07/11/202]
Fraport Twin Star Airport Management AD. (2020) “Boost event” Ochakvaniya za sezon lyato 2020. Fraport Bŭlgariya – Letishta Varna i Burgas. Varna
Ilieva G., (2021). Pazarni segmenti na obshtina Varna v usloviyata na Kovid-19 , Turizŭm, obrazovanie, biznes : Sbornik s dokladi ot mezhdunarodna nauchna konferentsiya, organizirana ot Kolezh po turizŭm - Burgas, 29 - 30 oktomvri 2021 g., Burgas : Kolezh po turizŭm. Universitet Prof. d-r Asen Zlatarov, 2021, str.181., ISSN(onlaĭn) 2738-893X
Ilieva, G. (2015). Problemi pri izpolzvane na elektronnite kanali za distributsiya na morski hotelski kompleks“// sb. dokladi „Turizmŭt v epokhata na transformatsiya“, izd. "Nauka i ikonomika" IU-Varna
Local government and local administration act, Prom. SG. 77/17 Sep 1991 . [Online] Available from: https://www.mrrb.bg/en/local-government-and-local-administration-act/ [Accessed 07/11/2022]
Marinov, S. (2015) Menidzhmŭnt na turisticheskata destinatsiya. - Varna : Univ. izd. Nauka i ikonomika
Marinov, S. Tendentsii na turisticheskoto tŭrsene za destinatsiya Varna (2021) Restart na turizma - nova nadezhda : XIV Chernomorski turisticheski forum, Varna, 23 - 24 april 2021, Varna : FIL, 2021, 7-15., ISBN (pechatno) 978-954-9741-45-21
Marinov, S., Bonev, YU., Filipov, G., Aleksieva, S., Ilieva, G., Stoyanova, D. (2018) Programa za ustoĭchivo razvitie na turizma v obshtina Nesebŭr 2018 - 2024 g.. Varna : FIL OOD, 2018, 180
National Statistical Institute. [Online] Available from:. https://www.nsi.bg/en/content/1847/tourism [Accessed 10/11/2022]
Rakadzhiĭska, S., Marinov, S., Dyankov, T., Yancheva, K. (2020) Turisticheski pazari. Varna: Nauka i ikonomika
UNWTO (2019). Tourism Definitions, UNWTO, Madrid, [Online] Available from:. https://www.e-unwto.org/doi/epdf/10.18111/9789284420858. [Accessed 07/11/2022]