1. ASABE 269.4. (2003). Cubes, pellets and crumbles—definitions and methods for determining density, durability and moisture content. St. Joseph Michigan.
2. CEN TS 14774. (2004). Method to determine moisture content of solid biofuels. Brussels.
3. CEN TS 14775. (2004). Method to determine ash content of solid biofuels. Brussels.
4. CEN TS 14918. (2004). Method to determine calorific value of solid biofuels. Brussels.
5. CEN TS 15103. (2004). Method to determine bulk density of biomass pellets. Brussels.