@misc{334,
  author = {Fox Richard and Brereton Tom M. and Asher Jim and August T.A. and Botham M. S. and Bourn N. a. D. and Cruickshanks K. L. and Bulman Caroline R. and Ellis S. and Harrower Colin A and Middlebrook I. and Noble David G. and Powney Gary D. and Randall R. D. and Warren Martin S. and Roy D. B.},
  title = {The State of the UK’s Butterflies 2015},
  year = {2015},
  month = {12/2015},
  publisher = {Butterfly Conservation and the Centre for Ecology & Hydrology},
  address = {Wareham, Dorset},
  url = {http://butterfly-conservation.org/files/soukb-2015.pdf},
  language = {eng},
}