1. Report from the Commission to the European Parliament, the Council, The European Economic and Social Committee and The committee of the Regions: Seventh Report on The Implementation of the Urban Waste Water Treatment Directive (9/271/EEC), 7.8.2013, Brussels.
2. Routledge, E.J., Sheahan D., Desbrow, C., Brighty, G.C., Waldock, M., and Sumpter, J.P., Environ. Sci. and Technol., 1998, vol. 32, pp. 1559–1565.
3. Daughton, C.G. and Ternes, I.A., Environ. Health. Perspect., 1999, vol. 107, Suppl. 6, pp. 907–938.
4. Svoboda, J., Fuksa, J.K., Matousova, L., Schobaurova, A., Vana, M., and St’astny, V., Vodni hospodarstvi, 2009, vol. 51(2), pp. 9–12.
5. Clara, M., Strenn, B., Ausserleitner, M., and Kreuzinger, N., Water Sci. and Technol., 2004, vol. 50(6), pp. 29–36.