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3. DIN, 2012. DIN EN 15935: Sludge, treated biowaste, soil and waste - Determination of loss on ignition. DIN Deutsches Institut für Normung e. V.
4. DIN, 2015. DIN EN ISO 18134: Solid biofuels – Determination of moisture content. DIN Deutsches Institut für Normung e. V.
5. DIN, 2016. DIN EN ISO 11085: Cereals, cereal-based products and animal feeding stuffs – Determination of crude fat and total fat content by the Randall extraction method. DIN Deutsches Institut für Normung e. V.