@ARTICLE{Sobczyk_Małgorzata_Retention_2016,
 author={Sobczyk, Małgorzata and Mrowiec, Maciej},
 number={No 30},
 journal={Journal of Water and Land Development},
 howpublished={online},
 year={2016},
 publisher={Polish Academy of Sciences; Institute of Technology and Life Sciences - National Research Institute},
 title={Retention capacity of extensive green roofs},
 URL={http://www.journals.pan.pl/Content/100932/PDF/Sobczyk%20Mrowiec.pdf},
}