J. Pennings

Polychlorinated biphenyls as inducers of hepatic porphyria in Japanese quail, with special reference to -aminolevulinic acid synthetase activity, fluorescence, and residues in the liver.

J. Vos, J. Strik, C. W. van Holsteÿn, 1971, Toxicology and applied pharmacology.

A Preliminary Survey of the Possile Contamination of Lake Nakuru in Kenya with Some Metals and Chlorinated Hydrocarbon Pesticides

P. S. Tjioe, J. Koeman, J. D. Goeij, 1972 .

Toxicogenomics of subchronic hexachlorobenzene exposure in Brown Norway rats.

Janine Ezendam, Frank Staedtler, Paolo Boffetta, 2004, Environmental health perspectives.

An orientational survey on the side-effects and environmental distribution of insecticides used in tsetse-control in Africa

J. Koeman, J. Pennings, 1970, Bulletin of environmental contamination and toxicology.