1. Emissions of N2O and CH4 from Wastewater Systems – Current State of Knowledge;Arnell,2013
2. Nitrous Oxide Emission from the Biological Process at Käppala WWTP;Carlsson,2012
3. Greenhouse Nitrogen Emission from Wastewater Treatment Operations – Interim Report;Chandran,2010
4. Nitrous-oxide emissions from municipal wastewater treatment;Czepiel;Environ. Sci. Technol.,1995
5. Modeling the Carbon Footprint at Käppala WWTP Due to More Stringent Discharge Limits. UPTEC W 13 008;Erikstam,2013