Baars A J, van Beek H, Spierenburg T J, de Graaf G J, Beeftink W G, Nieuwenhuize J, Boom J, Pekelder J J
Central Veterinary Institute, Department of Analytical Chemistry & Toxicology, Lelystad, The Netherlands.
Bull Environ Contam Toxicol. 1987 Dec;39(6):945-52. doi: 10.1007/BF01689583.