1. Andersen, W., andM. Kaake: Canada Med. Assoc. J.62, 59 (1950).
2. Beck andYegian: Amer. Rev. Tbc.66, 44 (1942).
3. Bernard etKreis: Presse méd.57, 695 (1949).
4. Canetti u.Rocher: Fortschr. Tbk.forsch.1950, III.
5. Canetti etSaenz: Ann. Inst. Pasteur80, 238 (1951).