1. Impact of substantial gainful activity level on disabled beneficiary work patterns;Franklin;Social Security Bulletin,1976
2. Effect of substantial gainful activity level on disabled beneficiary work patterns;Franklin;Social Security Bulletin,1979
3. Planning for program experimentation for the Social Security Disability Insurance Program;Franklin,1979
4. Order statistics from the gamma distribution;Gupta,1960
5. A non-Markovian stochastic model for the Taichung Medical IUD Experiment;Littman,1977