Haselton and Gangestad, 2006, “Conditional expression of women’s desires and men’s mate guarding”; Haselton, Martie G., Mina Mortezaie, Elizabeth G. Pillsworth, April Bleske-Rechek, and David A. Frederick. 2007. “Ovulatory shifts in human female ornamentation: Near ovulation, women dress to impress.” Hormones and Behavior 51:40–45.