‘Evolutionary psychology and the historian’, in: American Historical Review 119 (2014), 1563-1575

‘Ancient Egyptian sibling marriage and the Westermarck effect’, in: A. P. Wolf and W. H. Durham (eds.), Inbreeding, incest, and the incest taboo: the state of knowledge at the turn of the century, Stanford University Press: Stanford, 2004, 93-108

‘Brother-sister and parent-child marriage in premodern societies’, in: K. Aoki and T. Akazawa (eds.), Human mate choice and prehistoric marital networks: International Symposium 16, November 20-24, 2000, International Research Center for Japanese Studies: Kyoto, 2002, 33-47

‘Brother-sister marriage in Roman Egypt’, in: Journal of Biosocial Science 29 (1997), 361-371

‘Brother-sister and parent-child marriage outside royal families in ancient Egypt and Iran: a challenge to the sociobiological view of incest avoidance?’, in: Ethology and Sociobiology 17 (1996), 319-340

‘Incest revisited: three notes on the demography of sibling marriage in Roman Egypt’, in: Bulletin of the American Society of Papyrologists 32, 3-4 (1995), 143-155