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Vasileva, V., Kabakchieva, D.; Sabrieva, S. Anthropogenic tourism resources of Bulgaria. Himera, Shumen, 2020.Search in Google Scholar
Nikolova, M., Stoyanova, V.; Varadzhakova, D.; Ravnachka, A. Cultural ecosystem services for development of nature-based tourism in Bulgaria, Journal of the Bulgarian Geographical Society, 2021, 45, 81–87.Search in Google Scholar
Vasileva, V. Natural tourist resources of Bulgaria. Himera, Shumen, 2018.Search in Google Scholar
Alexova, D. Sustainable development of Chiprovtsi Municipality as a tourist destination. creating a tourism brand and strategic planning. About letters, Sofia, 2021.Search in Google Scholar
Vasileva, V.; Sabrieva, S. Protected arias in the Stara planina tourist region – current state and prospects for tourism development, Acta Scientifica Naturalis, 2023, 1, 69-83.Search in Google Scholar
PAN Parks is a pan-European network of well-managed protected areas with some of Europe’s most outstanding wildlife. The goal is to achieve an integrated approach combining wildlife protection and sustainable tourism development.Search in Google Scholar
Plan for integrated development of the Sungurlare Municipality for the period 2021-2027.Search in Google Scholar
Ministry of Economy and Energy. The National Strategy for Sustainable Development of Tourism in the Republic of Bulgaria 2014 – 2030. Sofia: 2014. Updated version 2017.Search in Google Scholar
Alexova, D. Sustainable development of Chiprovtsi Municipality as a tourist destination. Creating a tourism brand and strategic planning. About letters, Sofia, 2021.Search in Google Scholar
Sabrieva, S. Specifications of tourist infrastructure and superstructure in Nort Central planning region. SocioBrains, 2019, 54, 462-472.Search in Google Scholar
https://nsi.bg/bg/content/1978/%D0%B3%D0%BE%D0%B4%D0%B8%D1%88%D0%BD%D0%B8-%D0%B4%D0%B0%D0%BD%D0%BD%D0%B8Search in Google Scholar