1. CNN, “Wheelchair scams cost Medicare millions,” 2003. Website http://www.cnn.com/2003/HEALTH/11/11/us.wheelchair.ap/
2. Casella, G. and Berger, R., Statistical inference, 2nd edn., Duxbury, Pacific Grove, CA, 2002.
3. Center for Medicare and Medicaid Services, Program Memorandum Carriers Change Request 1363. Office of the Inspector General, U.S. Dept. of Health and Human Services, 2001.
4. Center for Medicare and Medicaid Services, “Medicare Definition of Fraud,” 2003. Website http://cms.hhs.gov/providers/fraud/DEFINI2.ASP
5. Cochran, W.G., Sampling techniques, 3rd edn., John Wiley and Sons, New York, 1977.