References
- Richard , Madsen . 1974 . A procedure for truncating SPRT's . J. Amer. Statist. Assoc , 69 : 403 – 410 .
- Parnet E.A. Jr. Sequential ranking procedures Technical Report No.80 Department of Statistics,Stanford University 1965
- Reynolds , Marion R. Jr. 1975 . A sequential signed-rank test for symmetry . Ann. Statist , 3 : 382 – 400 .