Rosenfeld DL et al., 1980
Crowley WF Jr et al., 1980
Rosenberg SM et al., 1980
Knobil E et al., 1980
Garfield RE et al., 1980
Koninckx PR et al., 1980
Hilgers TW et al., 1980
Billings JJ, 1980
Insler V et al., 1980
Hilgers TW et al. Obstet Gynecol. 1980.
Hilgers TW, 1980
Wentz AC, 1980
Currie JN et al., 1980
Hodger GD et al., 1980
Billings EL et al., 1980
Ryan KG, 1980
Wilkes MM et al., 1980
Hertz JB et al., 1980
E C Cameron et al., 1980
Goldstein A et al., 1979
Parker CR Jr et al., 1979
Meyer-Bahlburg HF, 1979