// <I>TE-RE-RD 2016<D> : 5th International conference on ''Thermal equipment, renewable energy and rural development'', Golden Sands, Bulgaria, june 2016 : Proc . - Bucharest : Politehnica, 2016, p. 501-507.
N. Zlatov; C. Iliev; M. Velikanov;
I. K. Iliev;
K. Jesionek и др.