1. Comparison of two methods for the measurement of sperm concentration
Rebecca Z Sokol, M.D., Paula Shulman, Richard J Paulson, M.D. 
Fertility and Sterility 
Volume 73, Issue 3, Pages (March 2000)
DOI: /S (99)

2. FIGURE 1
Sperm concentration measurements obtained with the hemocytometer were highly correlated with those obtained from the MicroCell (P<.0001). Azoospermic samples are not included in the frequency distributions.
Sokol. Sperm concentration measurement. Fertil Steril 2000.
Fertility and Sterility  , DOI: ( /S (99) )