1. Wetzstein, R. (1965). Der Uterus Muskel. Morphologic Arch. Gynecol., 202, 1.
2. Wilhelmsson, L. (1981). Biological actions of prostaglandins on different tissues within the nonpregnant human uterus. Dissertation, Gothenburg University, Sweden.
3. Bengtsson, L. P. and Theobald, E. W. (1966). The effects of oestrogen and gestagen on the nonpregnant human uterus. Br. J. Obstet. Gynaecol., 73, 273.
4. Lundström, V., Gréen, K. and Wiqvist, N. (1976). Prostaglandins, indomethacin and dysmenorrhea. Prostaglandins, 11, 893–904.
5. Roth-Brandel, U., Bygdeman, M. and Wiqvist, N. (1970). Effect of intravenous administration of prostaglandin E1 and F2α on the contractility of the nonpregnant human uterus in vito. Acta Obstet. Gynecol. Scand., Suppl., 5, 19.