1. A framework for systems analysis of sustainable urban water management;Hellström;Environmental Impact Assessment Review,2000
2. A life cycle assessment based procedure for development of environmental sustainability indicators for urban water systems;Lundin;Urban Water,2002
3. Livsmedelssektorns syn på växtnäring från stad till land;Berglund,2001
4. Vinnerås B. Faecal separation and urine diversion for nutrient management of household biodegradable waste and wastewater. Licentiate thesis, Department of Agricultural Engineering. Uppsala: Swedish University of Agricultural Sciences; 2001.
5. SCB. Gödselmedel i jordbruket 2000/2001. Handels- och stallgödsel till olika grödor samt hantering och lagring av stallgödsel [Use of fertilizers and animal manure in agriculture in 2000/01, in Swedish]. Mi 30 SM 0202, Statistics Sweden; 2002.