This author has not been identified. Look up 'Rassul Ayani' in GoogleThis author has not been identified. Look up 'Yuri Ismailov' in GoogleThis author has not been identified. Look up 'Michael Liljenstam' in GoogleThis author has not been identified. Look up 'A. Popescu' in GoogleThis author has not been identified. Look up 'Hassan Rajaei' in GoogleThis author has not been identified. Look up 'Robert Rönngren' in Google