M. Kippenberger, S. Hanke, M. Biendl, G. Stettner, and A. Lagemann, “Transfer of Nitrate and various Pesticides into Beer during Dry Hopping”, BrSc, vol. 67, no. 1/2, pp. 1–9, Feb. 2014, Accessed: May 30, 2026. [Online]. Available: https://brewingscience.de/index.php/brewingscience/article/view/336