TY  - RPRT
TI  - Delayed ovulation and monozygotic twinning.
AU  - O Bomsel-Helmreich
AU  - E Papiernik-Berkhauer
PY  - 1976
DO  - 10.1017/s000156600001388x
UR  - https://pubmed.ncbi.nlm.nih.gov/1031545/
ID  - 1031545
ER  -