1. , 1953, 1-4 juin, Groningen (Nederland): First International Course in Paedo-Audiology, gen. secret. H. Huizing, E.N.T. clinic.
2. , 1957, 13-16 mai, St Louis (U.S.A.): International Conference on Audiology, part one, Assessment of Auditory Function, Hearing in children: Silverman R.; Goldstein R.; Hardy W.; Myklebust H.; Trenque L. (in the Laryngoscope, 68, 3. 1958, 218-253).
3. , 1958, 15-23 juillet, Manchester (U.K.); International Congress on the Educational Treatment of Deafness, gen. secret. A. W. G. Ewing, University.
4. , 1961, 13-16 juin, Groningen (Nederland): Second International Course in Paedo-Audiology, gen. secret. H. Huizing, E.N.T. clinic.
5. THE ASSESSMENT OF AUDITORY FUNCTION. I. HEARING IN CHILDREN???PANEL DISCUSSION