Buser H-R, Poiger T, Müller MD
Occurrence and Environmental Behavior of the Chiral Pharmaceutical Drug Ibuprofen in Surface Waters and in Wastewater.
Environ. Sci. Technol., 33, (15), 1999, 2529-2535.

Buser H-R, Poiger T., Müller M.D.
Occurrence and Fate of the Pharmaceutical Drug Diclofenac in Surface Waters: Rapid Photodegradation in a Lake.
Environ. Sci. Technol., 32, (22), 1998, 3449-3456.