W. Hazelhoff

The detection of circulating antibodies against Sarcocystis in human and bovine sera by the enzyme-linked immunosorbent assay (ELISA) technique.

J. Laarman, W. Tadros, W. Hazelhoff, 1979, Acta Leidensia.

The absence of cross reaction between toxoplasmic and sarcocystic tissue stage antigens in the enzyme-linked immunosorbent assay (ELISA) technique.

J. Laarman, W. Tadros, W. Hazelhoff, 1981, Transactions of the Royal Society of Tropical Medicine and Hygiene.