Long-acting contraceptive agents: norethisterone esters of polyunsaturated acids.
Francisco CG, Freire R, Hernandez R, Salazar JA, Suarez E, Vlahov R, Tarpanov V, Boshkova-Ljapova M, Milenkov B, Stoilova V, et al.
Francisco CG, et al. Among authors: suarez e.
Steroids. 1983 Mar;41(3):277-84. doi: 10.1016/0039-128x(83)90098-3.
Steroids. 1983.
PMID: 6658875