1. Paul, JR. A History of Poliomyelitis. New Haven, Conn: Yale University Press, 1971.
2. Seytre B, Shaffer M. Histoire de l´éradication de la poliomyélite. Les maladies meurent aussi. PUF: Paris, 2004
3. John TJ. The golden jubilee of vaccination against poliomyelitis. Indian J Med Res. 2004; 119:1-17
4. Blume S. Lock in, the state and vaccine development: Lessons from the history of the polio vaccines. Research Policy, 2005: 34; 159–173.
5. Enders JF, Weller TH, Robbins FC Cultivation of the Lansing strain of poliomyelitis virus in cultures of various human embryonic tissues. Science 1949; 109 : 85-7.
6. Robbins FC. The history of polio vaccine development. In: Plotkin SA, Orenstein WA, editors. Vaccines . 3rd ed. Philadelphia: WB Saunders Co. 1999.
7. Salk JE. Studies in human subjects on active immunization against poliomyelitis. I. A preliminary report of experiments in progress. J Am Med Assoc 1953; 151 : 1081-98.
8. Salk JE, Bennett BL, Lewis LJ, Bazeley PL, Krech V, Ward EN , et al. Studies in human subjects on active immunization against poliomyelitis. II. A practical means of inducing and maintaining antibody formation. Am J Public Health 1954; 44 : 994-1009.
9. Salk JE, Krech U, Youngner JS, Bennet BL, Lewis LJ, Brazeley PL. Formaldehyde treatment and safety testing of experimental poliomyelitis vaccines. Am J Public Health 1954; 44 : 563-70.
10. Meldrum M. "A calculated risk": the Salk polio vaccine field trials of 1954. BMJ. 1998; 317:1233-6
11. Lambert SM, Markel H. Making history: Thomas Francis, Jr, MD, and the 1954 Salk Poliomyelitis Vaccine Field Trial. Arch Pediatr Adolesc Med. 2000; 154:512-7.
12. Francis T Jr. Evaluation of the 1954 poliomyelitis vaccine field trial; further studies of results determining the effectiveness of poliomyelitis vaccine (Salk) in preventing paralytic poliomyelitis. JAMA. 1955; 158: 1266-70.
13. Francis T Jr, Korns RF, Voight RB, Boisen M, Hemphill FM, Napier JA, Tolchinsky E. An evaluation of the 1954 poliomyelitis vaccine trials. Am J Public Health. 1955; 45:1-63.
14. Smith JS. Patenting the Sun. Polio and the Salk Vaccine. New York: Bantam Doubleday Dell Publishing Group, 1991
15. Markel H. April 12, 1955-Tommy Francis and the Salk vaccine. N Engl J Med. 2005; 352:1408-10
16. Nathanson N, Langmuir AD. The Cutter incident: Poliomyelitis following formaldehyde-inactivated poliovirus vaccination in the United States during the spring of 1955. II. Relationship of poliomyelitis to Cutter vaccine. Am J Hyg 1963; 78 : 29-60.
17. Offit PA. The Cutter incident, 50 years later. N Engl J Med. 2005; 352: 1411-2.