Dittami, J., Keckeis, M., Machatschke, I., Katina, S., Zeitlhofer, J. and Kloesch, G. (2007). Sex Differences in the Reactions to Sleepign in Pairs versus Sleeping Among in Humans // Sleep and Biological Rhythms 5(4): 271–276.

Dong, Y., Morgan, C., Chinenov, Y., Zhou, L., Fan, W., Ma, X., & Pechenkina, K. (2017). Shifting diets and the rise of male-biased inequality on the Central Plains of China during Eastern Zhou // PNAS, 114(5), 932–937.

Doss, B. D., Rhoades, G. K., Stanley, S. M., & Markman, H. J. (2009). The effect of the transition to parenthood on relationship quality: An 8-year prospective study. Journal of Personality and Social Psychology, 96(3), 601–619

Douglas P. H., Hohmann G., Murtagh R., Thiessen-Bock R., Deschner T. Mixed messages: wild female bonobos show high variability in the timing of ovulation in relation to sexual swelling patterns. BMC Evolutionary Biology; 30 June, 2016.

Dykstra, P. A. & Fokkema, T. (2007). Social and Emotional Loneliness Among Divorced and Married Men and Women: Comparing the Deficit and Cognitive Perspectives // Basic and Applied Social Psychology, Volume 29, Issue 1, pp. 1–11.

Eaton, G. G. (1973), Social and endocrine determinants of sexual behaviour in simian and prosimian females // Primate Reproductive Behaviour, Vol. 2 (C. H. Phoenix, ed.), Basel: S. Karger, pp. 20–35.

Eaton, R. (Ed.). (1976). The world's cats II. Seattle, WA: Feline Research Group, Woodland Park Zoo.

Elder, J. H. and Yerkes, R. M.: The sexual cycle of the chimpanzee. Anat. Rec. 67:119–143 (1936).

Engelhardt, S. C., Bergeron, P., Gagnon, A., Dillon, L., Pelletier, F. (2019). Using Geographic Distance as a Potential Proxy for Help in the Assessment of the Grandmother Hypothesis // Current Biology, volume 29, issue 4, pp. 651–656.

Englander-Golden, R, Chang, H., Whitmore, M. R., & Dienstbier, R. A. (1980). Female sexual arousal and the menstrual cycle. Journal of Human Stress, 6, 42–48.

Escasa, M. J., Casey J. F., Gray P. B. Salivary testosterone levels in men at a U. S. sex club // Arch Sex Behav. 2011 Oct;40(5):921–926.

Essex, M. J., et al. “Maternal Stress Beginning in Infancy May Sensitize Children to Later Stress Exposure: Effects on Cortisol and Behavior.” Biol Psych 52, no. 8 (2002): 776–84.

Fairbanks, L.and McGuire, M. T. Age, reproductive value, and dominance-related behavior in vervet monkey females: cross-generational influences on social relationships and reproduction // Animal Behaviour 34 (1986): 1710–1721.

Fan Xinyu, Wu Lingwei. The Economic Motives for Foot-binding, 2018.