@article{Brennan1983,
author = {Brennan, E.R. and Relethford, J.H.},
title= {Temporal variation in the mating structure of Sanday, Orkney Islands},
year = {1983},
doi = {10.1080/03014468300006431},
journal = {Annals of Human Biology},
volume = {10},
number = {3},
pages = {265--280},
}