1. Beaver, P. C.: Methods of pinworm diagnosis. Amer. J. trop. Med. 29, 577 (1949).
2. Bonsdorff, B. V.: The site of infestation with fish tapeworm determined by means of intestinal intubation. Diphyllobothrium latum and pernicious anemia. X. Acta med. scand. (Stockh.) 129, 213 (1947).
3. Boventer, K.: Über die Verbreitung menschücher Eingeweidewürmer in Itahen. Zbl. Bakter. I Orig. 152, 292 (1947).
4. Brand, TH. V.: The physiology of helminth parasites in relation to disease. Proc. 4. internat. Congr. trop. Med. a. Mai. Washington, Mai 1948.
5. Brown, H. W.: Observations on the mode of acting of several anthelmintics upon Ascaris lumbricoides (pig strain). Amer. J.Hyg. 26, 72 (1937).