Perez, P.F., Minnaard, J., Rouvet, M., Knabenhans, C., Brassart, D., De, Antoni, G.L., Schiffrin, E.J. (2001)Inhibition of Giardia intestinalis by extracellular factors from Lactobacilli: an in vitro study, Appl Environ Microbiol. , 67(11), pp. 5037-42.