Dover, J. W.; Sparks, T. H.; Greatorex-Davies, J. N. (1997-06-01). "The importance of shelter for butterflies in open landscapes". Journal of Insect Conservation. 1 (2): 89–97. doi:10.1023/A:1018487127174. ISSN1366-638X. S2CID19505847.
Roy, D. B.; Rothery, P.; Moss, D.; Pollard, E.; Thomas, J. A. (2001-03-01). "Butterfly numbers and weather: predicting historical trends in abundance and the future effects of climate change". Journal of Animal Ecology. 70 (2): 201–217. Bibcode:2001JAnEc..70..201R. doi:10.1111/j.1365-2656.2001.00480.x. ISSN1365-2656.
Roy, D. B.; Rothery, P.; Moss, D.; Pollard, E.; Thomas, J. A. (2001-03-01). "Butterfly numbers and weather: predicting historical trends in abundance and the future effects of climate change". Journal of Animal Ecology. 70 (2): 201–217. Bibcode:2001JAnEc..70..201R. doi:10.1111/j.1365-2656.2001.00480.x. ISSN1365-2656.
Dover, J. W.; Sparks, T. H.; Greatorex-Davies, J. N. (1997-06-01). "The importance of shelter for butterflies in open landscapes". Journal of Insect Conservation. 1 (2): 89–97. doi:10.1023/A:1018487127174. ISSN1366-638X. S2CID19505847.
Dover, J. W.; Sparks, T. H.; Greatorex-Davies, J. N. (1997-06-01). "The importance of shelter for butterflies in open landscapes". Journal of Insect Conservation. 1 (2): 89–97. doi:10.1023/A:1018487127174. ISSN1366-638X. S2CID19505847.
Roy, D. B.; Rothery, P.; Moss, D.; Pollard, E.; Thomas, J. A. (2001-03-01). "Butterfly numbers and weather: predicting historical trends in abundance and the future effects of climate change". Journal of Animal Ecology. 70 (2): 201–217. Bibcode:2001JAnEc..70..201R. doi:10.1111/j.1365-2656.2001.00480.x. ISSN1365-2656.