9Brookes P C,Landman A,Pruden G.Chloroform fumigration and the release of soil nitrogen:A rapid extraction method to measure microbial biomass nitrogen in soil[J].Soil Biology & Biochemistry,1985,17(6):837-842.
10Dexter R.Acid phosphatases of Echerichia coli[J].Arch Biochem Biophys,1960,89:97-104.