This author has not been identified. Look up 'Nenad Trinajstic' in GoogleThis author has not been identified. Look up 'Darko Babic' in GoogleThis author has not been identified. Look up 'Sonja Nikolic' in GoogleThis author has not been identified. Look up 'Dejan Plavsic' in GoogleThis author has not been identified. Look up 'Dragan Amic' in GoogleThis author has not been identified. Look up 'Zlatko Mihalic' in Google