Welten, H. G. J. “Report by the EBC Analysis Committee on the Determination of NDMA in Beer by GC-TEA or GC-MS Detection (2009 Collaborative Trial): Approved by the Analysis Committee for Inclusion in the EBC Analytica”. BrewingScience, vol. 64, no. 5/6, June 2011, pp. 46-51, https://brewingscience.de/index.php/brewingscience/article/view/409.