1. Endocrinological studies with (7 alpha, 17 alpha)-17-hydroxy-7-methyl-19-norpregn-5(10)-en-20-yn-3-one (Org OD 14);De Visser;Arzneim Forsch,1984
2. Die Eichung oestrogener Stoffe;de Jongh,1938
3. Myotropic activity of 19-nortestosterone and other steroids determined by the modified levator ani muscle method;Hershberger,1953
4. The levator ani muscle of the rat as an index of myotrophic activity of steroidal hormones;Eisenberg;J. Pharmacol Exp Ther,1950
5. The assay of progestin;McPhail;J Physiol,1934