Editor-in-Chief
Prof. DSc. Eng. Martin Banov (Sofia – Bulgaria)
Editorial Board
Cor. Member Prof. Eng. DSc Stephan Dragoev (Plovdiv – Bulgaria)
Prof. DSc Irena Atanassova (Sofia – Bulgaria)
Prof. DSc Rositza Batchvarova (Sofia – Bulgaria)
Prof. DSc Radka Nedeva (Shumen – Bulgaria)
Prof. Dr. Anelia Katova (Pleven – Bulgaria)
Prof. Dr. Elena Todorovska (Sofia – Bulgaria)
Prof. Dr. Hrabrin Bachev (Sofia – Bulgaria)
Prof. Dr. Hristina Yancheva (Plovdiv – Bulgaria)
Prof. Dr. Hristo Daskalov (Sofia – Bulgaria)
Prof. Dr. Neli Valkova (Chirpan – Bulgaria)
Prof. Dr. Staika Laleva (Stara Zagora – Bulgaria)
Assoc. Prof. Vesela Chalova (Plovdiv – Bulgaria)
Prof. Dr. Diego Rubales (Cordoba – Spain)
Prof. Dr. Nikolaos Katis (Thessaloniki – Greece)
Prof. Dr. Rainer Horn (Kiel, Germany)
Prof. Dr. Tu Quang Hien (Thai Nguyen - Vietnam)
Prof. Dr. Yalcin Kaya (Edirne – Turkey)
Prof. Dr. Yukihiro Sogimoto (Kobe – Japan)
Prof. Dr. Li Zichau (Beijing – China)
Dr. Giuseppe Sortino (Palermo - Italy)
Dr. Nicola Galluzzo (Rieti – Italy)
Dipl.-Ing. Klaus Wagner (Vienna – Austria)
Executive Editor: Vanya Draganova
Print preparation: Photonika - Ivo Nikov