Angold, P. G.; Sadler, J. P.; Hill, M. O.; Pullin, A.; Rushton, S.; Austin, K.; Small, E.; Wood, B.; Wadsworth, R. (1. мај 2006). „Biodiversity in urban habitat patches”. Science of The Total Environment. Urban Environmental Research in the UK: The Urban Regeneration and the Environment (NERC URGENT) Programme and associated studies. 360 (1): 196—204. doi:10.1016/j.scitotenv.2005.08.035.
Goverde, M.; Erhardt, A.; Niklaus, P. A. (2002). „In Situ Development of a Satyrid Butterfly on Calcareous Grassland Exposed to Elevated Carbon Dioxide”. Ecology (на језику: енглески). 83 (5): 1399—1411. ISSN1939-9170. doi:10.1890/0012-9658(2002)083[1399:ISDOAS]2.0.CO;2.
Angold, P. G.; Sadler, J. P.; Hill, M. O.; Pullin, A.; Rushton, S.; Austin, K.; Small, E.; Wood, B.; Wadsworth, R. (1. мај 2006). „Biodiversity in urban habitat patches”. Science of The Total Environment. Urban Environmental Research in the UK: The Urban Regeneration and the Environment (NERC URGENT) Programme and associated studies. 360 (1): 196—204. doi:10.1016/j.scitotenv.2005.08.035.
Goverde, M.; Erhardt, A.; Niklaus, P. A. (2002). „In Situ Development of a Satyrid Butterfly on Calcareous Grassland Exposed to Elevated Carbon Dioxide”. Ecology (на језику: енглески). 83 (5): 1399—1411. ISSN1939-9170. doi:10.1890/0012-9658(2002)083[1399:ISDOAS]2.0.CO;2.