Proficiency Test on the Determination of PCDD/Fs and PCBs in Grass Meal Publication Attachment: 4901.pdf Authors: Kotz A, Malisch R, Wahl K, Hadrich J, Bitomsky N, Adamovic K, Gerteisen I, Leswal S, Podestat U, Schächtele J, Stumpf C, Tritschler R, Winterhalter H Year: 2011