1. Viability of Cryptosporidium parvum Oocysts in Natural Waters.;Brasseur;Folia Parasitolitica,1998
2. Canada 1999 Relevé des Maladies Transmissibles au Canada. Eclosion de Cryptosporidiose Associée à L'eau d'une Fontaine-Minnesota, 1997 Notes internationales http://www.hc-sc.gc.ca/hpb/lcdc/publicat/ccdr/99vol25/rm2502fb.html
3. Results of Testing for Intestinal Parasites by State Diagnostic Laboratories, United States, 1987;Centers for Disease Control and Prevention (CDC);Morbidity & Mortality Weekly Rept.,1991
4. Impact de Trois Types de Cartouches de Filtration Sur le Rendement de la Méthode de Detection Quantitative de Cryptosporidium et Giardia.;Cervantes;Jour. Europ. Hydrologie,1997
5. Infectivity of Cryptosporidium parvum in Healthy Adults With Preexisting Anti-C. parvum Serum Immunoglobulin.;Chappell;G. Amer. Jour. Trop. Med. Hyg.,1999