Authors
Rositsa Petkova-Slipets
Department of Civil Engineering, Faculty of Architecture, Varna Free University “Chernorizets Hrabar”, Varna, Bulgaria
Krastin Yordanov
Department of Thermal Engineering, Shipbuilding Faculty, Technical University of Varna, Varna, Bulgaria
Penka Zlateva
Department of Thermal Engineering, Shipbuilding Faculty, Technical University of Varna, Varna, Bulgaria
