1. The real sixth mass extinction: Biological annihilation signaled by population losses and declines in vertebrates;Ceballos G.;Proceedings of the National Academy of Sciences, USA,2017
2. Estimating the normal background rate of species extinction
3. All Is Not Loss: Plant Biodiversity in the Anthropocene
4. Hardoon D.(2017).Oxfam Briefing Report. An Economy for the 99%. Retrieved fromhttps://policy-practice.oxfam.org.uk/publications/an-economy-for-the-99-its-time-to-build-a-human-economy-that-benefits-everyone-620170 accessed 13 July 2017.
5. Scaling laws predict global microbial diversity