This author has not been identified. Look up 'Marjan Faizi' in GoogleThis author has not been identified. Look up 'Tomás Zavrel' in GoogleThis author has not been identified. Look up 'Cristina Loureiro' in GoogleThis author has not been identified. Look up 'Jan Cervený' in GoogleThis author has not been identified. Look up 'Ralf Steuer' in Google