TY  - RPRT
TI  - Steroid antifertility agents. Ionic complexes of basic derivatives for prolonged action.
AU  - A P Gray
AU  - T N Yamauchi
PY  - 1978
DO  - 10.1021/jm00205a027
UR  - https://pubmed.ncbi.nlm.nih.gov/671469/
ID  - 671469
ER  -