Phosphorus speciation in different sewage sludges and their biochars and its implications for movement of labile phosphate in two soils - Josephine Kooij; Puu-Tai Yang; Sander Bruun; Jakob Magid; Ulla Gro Nielsen; Luise Theil Kuhn; Dorette Müller-Stöver (Journal of Environmental Management, 2024)