Yangyozov, A., Dimitrova, D. and Panayotov, L. 2018. Modeling and performance calculation of a horizontal axis wind and hydrokinetic turbine: Numerical study. ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA, BULGARIA. 2, 2 (Dec. 2018), 70-79. DOI:https://doi.org/10.29114/ajtuv.vol2.iss2.95.