1. Vaccination and herd immunity to infectious disease;Anderson;Nature,1985
2. Anisimov , O. Vaughan , D. Callaghan , T. Furgal , C. Marchant , H. Prowse , T. Walsh , J. 2007 Polar regions (Arctic and Antarctic) M. Parry O. Canziani J. Palutikof P. van der Linden C. Hanson Change 2007: Impacts, adaptation and vulnerability contribution of working group II to the fourth assessment report of the Intergovernmental panel on climate change 653 685 Cambridge Cambridge University Press
3. Impacts of poor food availability on positive density dependence in a highly colonial seabird;Ashbrook;Proceedings of the Royal Society B: Biological Sciences,2010
4. Bartoń , K. 2014 MuMIn: Multi-model inference