Kang, E.W., Clinch, K., Furneaux, R.H., Harvey, J.E., Schofield, P.J., Gero, A.M. (1998)A novel and simple colorimetric method for screening Giardia intestinalis and anti-giardial activity in vitro, Parasitology. , 117 ( Pt 3), pp. 229-34.