1. Modem Methods of Chemical Analysis;Barnard,1965
2. En kolorimetrisk metode til bestemmelse af fosforindholdet i planter;Benjaminsen;Tidsskrift for Planteavl,1955
3. Leaching of water-soluble organic substances from coniferous needle litter;Blaschke;Soil Biology & Biochemistry,1979
4. Losses of wheat straw residue under simulated field conditions;Brown,1970
5. Carbon and nitrogen movement from surface-applied wheat (Triticum aestivum) straw;Cochran;Soil Science Society of America Journal,1980