Public PhD thesis defense of Nikolay Alexandrov Yotovski on the topic “Effectiveness of Policies and Measures to Support the Activity of Tour Operators under the Restrictions Imposed by Covid-19 (Comparative Analysis of State Policies)” for awarding the educational and scientific degree "Doctor" in a professional field 4.4. Earth Sciences (Geography of Recreation and Tourism).

Scientific supervisor: Assoc. Prof. Elena Petkova, PhD
Chairperson of the Scientific Jury: Prof. Kliment Naydenov, DSc

Abstract (Author's summary of the Thesis)

Reviews:

• Prof. Kliment Naydenov, DSc
• Prof. Maria Vodenska, DSc

Opinions:

• Prof. Ivan Markov, PhD
• Assoc. Prof. Radenka Mitova, PhD
• Assoc. Prof. Sonya Alexieva, PhD