Article Source: https://www.ncbi.nlm.nih.gov/pubmed/14945532

Spinnbarkeit: a characteristic of cervical mucus; significance at ovulation time.
Cohen MR, Stein IF Sr, Kaye BM.
Fertil Steril. 1952 May-Jun;3(3):201-9. No abstract available.
PMID: 14945532