Greenhouse gas emissions and sustainability of green roofs and stormwater systems at a district level – comparisons with a life cycle perspectiveJutta Schade, Jani Mukkavaara, Birgit Brunklaus and Mathias von ScherlingE3S Web Conf., 349 (2022) 04003DOI: https://doi.org/10.1051/e3sconf/202234904003