This author has not been identified. Look up 'D. Babusci' in GoogleThis author has not been identified. Look up 'G. Dattoli' in GoogleThis author has not been identified. Look up 'Bruna Germano' in GoogleThis author has not been identified. Look up 'Maria Renata Martinelli' in GoogleThis author has not been identified. Look up 'Paolo Emilio Ricci' in Google