1. Evaluadon of the three-stage hearing testing programme for children in Poland;Borkowska-Gaertig,1975
2. Expanding imperatives of early identification;Downs,1977
3. A hearing testing program for pre-school children;Downs;Rocky Mt. Med. J.,1959
4. Evaluation of methods for detecting hearing impairment in infancy and early childhood;Feinmesser,1975
5. Evaluation of screening procedures;Frankenburg,1971