Lyubomir Lazov Rezekne Academy of Technologies, Latvia Latvia
Nikolay Todorov Dolchinkov National Military University „Vasil Levski“, Veliko Tarnovo, Bulgaria, National Research University "Moscow Power Engineering Institute", Moscow, Russia Bulgaria
Jordan Shterev Ivanov National Military University „Vasil Levski“, Veliko Tarnovo, Bulgaria Bulgaria
Madlen Nikolaeva Peneva National Military University „Vasil Levski“, Veliko Tarnovo, Bulgaria Bulgaria
Denitsa Angelova Bojhanova National Military University „Vasil Levski“, Veliko Tarnovo, Bulgaria Bulgaria