F. Laturnus and C. Grøn, “Organic waste products in agriculture ‐ monitoring the waste constituents phthalate esters in soil‐crop system by gas chromatography and ion trap tandem mass spectrometry”, JEELM, vol. 15, no. 4, pp. 253–260, Dec. 2007, doi: 10.3846/16486897.2007.9636938.