This author has not been identified. Look up 'Alexandru Hegyi' in GoogleThis author has not been identified. Look up 'Dragos Diaconescu' in GoogleThis author has not been identified. Look up 'Petru Urdea' in GoogleThis author has not been identified. Look up 'Apostolos Sarris' in GoogleThis author has not been identified. Look up 'Michal Pisz' in GoogleThis author has not been identified. Look up 'Alexandru Onaca' in Google