1. COMOTI – Romanian Research & Development Institute for Gas Turbines, B-dul Iuliu Maniu 220D, Bucharest 061136, Romania, emilia.prisacariu@comoti.ro and POLITEHNICA University of Bucharest, Splaiul Independentei No.313, Bucharest 060042, Romania
2. POLITEHNICA University of Bucharest, Splaiul Independentei No.313, Bucharest 060042, Romania, tudor.prisecaru@upb.ro