Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 17 references without a DOI — listed, not checked
no DOI — not checkedBraddock, D., Hemp, R., Fugiura, G., Bachelder, L., and Mitchell, D. (1990).The State of the States in Developmental Disabilities, Paul H. Brookes, Baltimore.
no DOI — not checkedBrickey, M., Browning, L., and Campbell, L. (1982). Vocational histories of sheltered workshop employees placed in Projects With Industry and competitive jobs.Ment. Retard., 20: 52?57.
no DOI — not checkedBureau of Health Professions (1987). Area Resource File. U. S. Department of Health and Human Services.
no DOI — not checkedCastellani, P. J. (1987).The Political Economy of Developmental Disabilities, Paul Brookes Publishing Co., Baltimore.
no DOI — not checkedCohen, S. B., Potter, D. E. B., and P. Flyer (1989). Appendix: Sample design of the Institutional Population Component?National Medical Expenditure Survey. In Edwards, W. S., and Ed Wards, B. (eds.), National Medical Expenditure Survey: Institutional Population Component. Questionnaires and data collection methods. U. S. Department of Health Services, Public Health Service, National Center for Health Services Research and Health Care Technology Assessment.
no DOI — not checkedCunningham, P. J., and Mueller, C. D. (1991). Residents with mental retardation in state institutions and residential facilities: Findings from the 1987 National Medical Expenditure Survey.Am. J. Ment. Retad. 96: 109?117.
no DOI — not checkedEdwards, W. S., and Edwards, B. (1989). National Medical Expenditure Survey: Institutional Population Components Questionnaires and data collection methods. U. S. Department of Health and Human Services, Public Health Service, National Center for Health Services Research and Health Care Technology Assessment.
no DOI — not checkedHill, J. W., Wehman, P., Hill, M., & Goodall, P. (1986). Differential reasons for job separat of previously employed persons with mental retardation.Ment. Retard. 24: 347?351.
no DOI — not checkedKiernan, W. E., Schalock, R. L., and Knutson, K. (1989). Economic and demographic trends influencing employment opportunities for adults with disabilities. In Kiernan, W. E., and Schalock, R. L. (eds.),Economics, Industry, and Disability: A Look Ahead, Paul Brookes, Baltimore.
no DOI — not checkedMcDonnel, J., Hardman, M. L., and Hightower, J. (1989). Employment preparation for high school students with severe handicaps.Ment. Retard. 27: 396?405.
no DOI — not checkedPedhazur, E. (1982).Multiple Regression in Behavioral Research, Holt, Rinehart and Winston, New York.
no DOI — not checkedRusch, F. R., Mithaug, D. E., and Flexer, R. W. (1986). Obstacles to competitive employment and traditional program options for overcoming them. In Rusch, F. (ed.),Competitive Employment Issues and Strategies, Paul Brookes, Baltimore, pp. 7?21.
no DOI — not checkedShafer, M. S., Banks, P. D., and Kregel, J. (1991). Employment retention and career movement among individuals with mental retardation working in supported employment.Ment. Retard. 29: 103?110.
no DOI — not checkedShafer, M. S. Wehman, P., Kregel, J., and West, M. (1990). National supported employment initiative: A preliminary analysis.Am. J. Ment. Retard. 95: 316?327.
no DOI — not checkedShah, B. V. (1981). SESUDAAN: Standard errors program for computing of standardized rates from sample survey data. Research Triangle Institute Research Triangle Park, NC.
no DOI — not checkedWehman, P., Kregel, J., and Seyfarth J. (1985). Employment outlook for young adults with mental retardation.Rehab. Counsel. Bull. 29: 90?99.
no DOI — not checkedWhite, C. C., Hill, B. K., Lakin, K. C., and Bruininks, R. H. (1984). Day programs of adults with mental retardation in residential facilities.Ment. Retard. 22: 121?127.
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