Doneva-Yankulova, V. Analyzing Key Performance Indicators (KPIS) As Impact Factors in Economic Tourism Development in Bulgaria Compared to Balkan EU Countries. UNWE Publishing Complex, 2024 350-366,.
Doneva-Yankulova, V. Analyzing Key Performance Indicators (KPIS) As Impact Factors in Economic Tourism Development in Bulgaria Compared to Balkan EU Countries. UNWE Publishing Complex, 2024 350-366,.
Doneva-Yankulova, V. (2024) Analyzing Key Performance Indicators (KPIS) As Impact Factors in Economic Tourism Development in Bulgaria Compared to Balkan EU Countries, UNWE Publishing Complex 350-366,.
Doneva-Yankulova, V. (2024). Analyzing Key Performance Indicators (KPIS) As Impact Factors in Economic Tourism Development in Bulgaria Compared to Balkan EU Countries. The Membership of Bulgaria in the European Union: Sixteen Years Later : Vol. 1- : October 2023, UNWE - Sofia (с. 350-366). UNWE Publishing Complex. Vol. 1. Papers presented in Bulgarian language.
Doneva-Yankulova V. Analyzing Key Performance Indicators (KPIS) As Impact Factors in Economic Tourism Development in Bulgaria Compared to Balkan EU Countries. UNWE Publishing Complex; 2024. p. 350-366.