S. R. Müller, B. Wehrli, A. Wüest, H. Xue, and L. Sigg, “The Fate of Trace Pollutants in Natural Waters – Lakes as ’Real-World Test Tubes’”, Chimia, vol. 51, no. 12, p. 935, Dec. 1997, doi: 10.2533/chimia.1997.935.