1. Anders, W., Weise, H.-J.: Typhus abdominalis und Tourismus. Bundesgesund-heitsblatt 12, 181 (1969)
2. Anonymus: Shigella Surveillance — Shiga bacillus dysentery among United State Travellers and Review of the Middle American Pandemic. Center for Disease Control (CDC) U.S. Dep. Health Public Health Serv. Rep., Nr. 26 (1971)
3. Bloss, J.F.: Traveller’s diarrhea. Trans, roy. Soc. trop. Med. Hyg. 58, 278 (1964).
4. Circular Letter (Advisory Memorandum No. 31): Prevention of Traveller’s diarrhea — USPHS-CDC Atlanta/Ga. (10. April 1972 )
5. Hyllner, S.: Diarrhea in tourists in Gran Canaria etc. Acta Gastroent. (Belg.) 27, 249 (1964)