Alexander, Richard D. “How Did Humans Evolve?” Special publication no. 1. University of Michigan Museum of Zoology, Ann Arbor, 1990.
Emlen, Stephen T., Natalie J. Demong, and Douglas J. Emlen., “Experimental Induction of Infanticide in Female Wattled Jacanas.” Auk 106 (1989): 1–7.
Francis, Charles M., Edythe L. P. Anthony, Jennifer A. Bran-ton, and Thomas H. Kunz. “Lactation in Male Fruit Until” Nature 367 (1994): 691-92.
Gjershaug, Jan Ove, Torbjorn Jarvi, and Elvin Roskaft. “Mar-riage Entrapment by 'Solitary' Mothers: A Study on Male Deception by Female Pied Flycatchers.” American Naturalist 133 (1989): 273-76.
Greenblatt, Robert B. “Inappropriate Lactation in Men and Women.” Medical Aspects of Human Sexuality 6, no. 6 (1972): 25–33.
Hawkes, Kristen. “Why Do Men Hunt? Benefits for Risky Choices.” In Risk and Uncertainty in Tribal and Peasant Economies, edited by Elizabeth Cashdan (pp. 145- 66). Boulder, Colo.: Westview Press, 1990.
Hawkes, Kristen, James F. O'Connell, and Nicholas G. Blurton Jones. “Hardworking Hadza Grandmothers.” In Comparative Socioecology: The Behavioral Ecology of Humans and Other Mammals, edited by V. Standen and R. A. Foley (pp. 341-66). Oxford: Blackwell Scientific Publications, 1989.
Hill, Kim, and A. Magdalena Hurtado. “The Evolution of Premature Reproductive Senescence and Menopause in Human Females: An Evaluation of the Grandmother Hypothesis.” Human Nature 2 (1991): 313-50.
Kodric-Brown, Astrid, and James H. Brown. “Truth in Advertising: The Kinds of Traits Favored by Sexual Selection,” American Naturalist 124 (1984): 309-23.
Oring, Lewis W., David B. Lank, and Stephen J. Maxson. “Population Studies of the Polyandrous Spotted Sandpiper.” Auk 100 (1983): 272-85.
Sillen-Tulberg, Birgitta, and Anders P. Mailer. “The Relationship Between Concealed Ovulation and Mating Systems in Anthropoid Primates: A Phylogenetic Analysis.” American Naturalist 141 (1993): 1-25.
Note1
or the old woman