P. Nachilobe

Determination of trimethoprim in bovine serum by high-performance liquid chromatography with confirmation by thermospray liquid chromatography-mass spectrometry.

J. Boison, R. Cassidy, A. Fesser, 1993, Journal of chromatography.

Determination of trimethoprim and sulphadoxine residues in porcine tissues and plasma.

P. Thacker, J. Boison, R. Cassidy, 1996, Canadian journal of veterinary research = Revue canadienne de recherche veterinaire.