TY  - RPRT
TI  - Quantitative sperm mucus penetration: modified formulae for calculating penetration efficiency.
AU  - G N Clarke
AU  - C Garrett
AU  - H W Baker
PY  - 1998
DO  - 10.1093/humrep/13.5.1255
UR  - https://pubmed.ncbi.nlm.nih.gov/9647556/
ID  - 9647556
ER  -