3 ms·
For the 30 y assumption they cite: Fenner JN (2005) Cross-cultural estimation of the human generation interval for use in genetics-based population divergence
by mvermaat 14y ago
For the 30 y assumption they cite:
Fenner JN (2005) Cross-cultural estimation of the human generation interval for use in genetics-based population divergence studies. Am J Phys Anthropol 128(2):415–423.