TY  - RPRT
TI  - Letter: Caffeine, theophylline and human sperm motility.
AU  - C Schoenfeld
AU  - R D Amelar
AU  - L Dubin
PY  - 1976
UR  - https://pubmed.ncbi.nlm.nih.gov/7478/
ID  - 7478
ER  -