E. Loebell

• International Association of Logopedics and Phoniatrics
• International Association of Logopedics and Phoniatrics : 17th Congress, Copenhagen, August 1977
• International Association of Logopedics and Phoniatrics : 18th Congress, Washington, D. C. , August 1980 : AbstractsSpecial Topic Issue
• International Association of Logopedics and Phoniatrics : 22nd Congress, Hannover, August 1992 : AbstractsSpecial Topic Issue
• International Association of Logopedics and Phoniatrics : 22nd Congress, Hannover, August 1992 : Main ReportsSpecial Topic Issue