1. Handbook of biomass combustion and co-firing;van Loo,2008
2. Possibilities of ash utilisation from biomass combustion plants;Obernberger,2009
3. International handbook: from extraction of forest fuels to ash recycling;Emilsson,2006
4. Environmentally friendly use of non-coal ashes in Sweden;Ribbing;Waste Manag,2007
5. Recycling of biomass ash;Insam,2011