1. The postwash total progressively motile sperm cell count is a reliable predictor of total fertilization failure during in vitro fertilization treatment 
Johann P.T Rhemrev, M.D., Jan Willem Lens, Ph.D., Joseph McDonnell, Joop Schoemaker, Ph.D., Jan P.W Vermeiden, Ph.D. 
Fertility and Sterility 
Volume 76, Issue 5, Pages (November 2001)
DOI: /S (01)

2. Figure 1 Selection of reproducible variables and statistical analysis.
Rhemrev. Prediction of total fertilization failure. Fertil Steril 2001.
Fertility and Sterility  , DOI: ( /S (01) )