Franco, R.M.B. et al. 2012. Environmental Parasitology: Methods of concentration and detection of Cryptosporidium spp. and Giardia spp. in water samples. Revista de Patologia Tropical / Journal of Tropical Pathology. 41, 2 (Jul. 2012). DOI:https://doi.org/10.5216/rpt.v41i2.19320.