Brereton, T.M., Warren, M.S., Roy, D.B. & Stewart, K. (2008) The changing status of the Chalkhill Blue butterfly Polyommatus coridon in the UK: the impacts of conservation policies and environmental factors. Journal of Insect Conservation, 12, 629–638.
Agri-environment schemes
Brereton, T.M., Roy, D.B., Middlebrook, I., Botham, M.S. & Warren, M.S. (2011) The development of butterfly indicators in the United Kingdom and assessments in 2010. Journal of Insect Conservation, 15, 139–151.
Burns, F., Eaton, M.A., Barlow, K., Beckmann, B., Brereton, T.M., Brooks, D., Brown, P.M.J., Fulaij, A., Gent, T., Henderson, I.G., Noble, D.G., Parsons, M., Powney, G.D., Roy, H.E., Stroh, P., Walker, K.J., Wilkinson, J., Wotton, S. & Gregory, R. (2016) Agricultural management and climatic change are the major drivers of biodiversity change in the UK. PLoS ONE, 11, e0151595.