1. Loeffler: Zbl. Bakter.11, 129 (1892).
2. Jensen: Z. Immun.forschg63, 298 (1929).
3. Sollazo: Z. Hyg.110, 306 (1929).
4. Friedlander andMeyer: J. Inf. Dis.44 (1929), ref. Zbl. Bakter. Ref.96, 550 (1930).
5. Friedlander andHertert: J. Inf. Dis.44 (1929), ref. Zbl. Bakter. Ref.96, 551 (1930).