Reference
- Amvig Jørgen. Proceedings of the International Course in Paedo-Audiology. June, 1952; 29–38
- Bordley J. E., Hardy W. G. The Etiology of Deafness in Young Children. Acta Oto-Laryngologica 1951; 40: 72–79
- Falbe-Hansen J. Hardness of Hearing in School Children. Acta Oto-Laryngologica 1954; 44: 157–160
- Falbe-Hansen J., Johnsen Steen. Ota Hyppigheden og Arten af Ørelidelser hos Elever i Københavns Kommuneskoler. Ugesk. f. laeger ill 1949; 436–437, in Danish
- Fowler E. P., Basek M. Causes of Deafness in Young Children. Archives of Oto- laryng. 1954; 59: 476–484
- Hall A., Rytzner C. Svenska Lakt. 1955; 52: 1456–1462, in Swedish
- Johnsen Steen. Partiel Nervedovhed hos Born. Thesis, Copenhagen 1954, in Danish with an English Summary
- Københavns Kommunale Skolevâsen, Årsberetning 1955-56. Annual Report for the ouncil Schools in Copenhagen 1955-56, in Danish
- Ohrt H.H. Tunghare Born behandlet i en Horecentral. Ugeskr. f. lâger 1956; 118: 151–157, (in Danish)