Atsauces

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Gedge, D. and G. Kadas, 2005. Green roofs and biodiversity. Biologist
Gedge, D., J. Newton, K. Cradick and P. Cooper, 2008. Living roofs and wall. Technical Report: Supporting London Plan Policy. Great London Authority, London (UK) http://legacy.london.gov.uk/mayor/strategies/ sds/docs/living-roofs.pdf
Pledge, E., 2005. Green Roofs: Ecological Design and Construction. Schiffer Publishing, Atglen, Pennsylvania, USA
Shaw, J.H., 1985. Introduction to Wildlife Management. McGraw-Hill Inc., New York.
Snodgrass, E. and L. Snodgrass, 2006. Green Roof Plants: A Resource and Planting Guide. Timber Press, Portland, Oregon
Wikipedia, 2009. Green roof. http://en.wikipedia.org/wiki/
How to attract birds to your garden, RSPB. https://www.rspb.org.uk/get-involved/activities/birdwatch/feeding-and-attracting-birds/
Ecology and Conservation of Birds in Urban Environments.2017, Auth:Enrique Murgui and Marcus Hedblom
Swedish University of Agricultural Sciences. https://www.researchgate.net/publication/313845304_Ecology_and_Conservation_of_Birds_in_Urban_Environments