1. Le prove per svelare la simulazione di sordita;Azzi;Riv. Audiol. Prat.,1950
2. Hearing test in simulation;Azzi;Intern. Audiol.,1962
3. Deafness;Ballantyne,1960
4. A manual of otology, rhinology and laryngology;Ballenger,1940
5. The FIT test;Bergman;Arch. Otolaryng.,1964