TY  - RPRT
TI  - A MATHEMATICAL MODEL FOR HUMAN FERTILITY PATTERNS.
AU  - E B PERRIN
AU  - M C SHEPS
PY  - 1965
DO  - 10.1080/00039896.1965.10664078
UR  - https://pubmed.ncbi.nlm.nih.gov/14280193/
ID  - 14280193
ER  -