1. Service delivery;Blackstone,1990
2. A follow-up survey of prototype vocational aids for the blind;Brabyn,1981
3. Rehabilitation engineering services evaluation: a followup survey of device effectiveness and patient acceptance;Caudrey;Rehabil. Lit.,1983
4. The importance of outcomes and cost benefit analysis in AAC;DeRuyter,1992
5. Evaluating outcomes in AAC service delivery programs;DeRuyter,1992