1. Bertram, 6. Tagung D. Nordwestdtsch. Ges. Inn. Med. Hamburg, 28. bis 29.1. 1927, Zbl. Inn. Med.1927, Nr 42, 1014.
2. Bincer, Kongreßzbl. Inn. Med.56, 592 (1930).
3. Brauchli u.O. Schneider, Arch. F. Exper. Path.119, H. 3/4, 240 (1926).
4. Bucciardi, Boll. Soc. Ital. Biol. Sperim.1928, H.3, 530; ref. KongreßZbl. Inn. Med.53, 197 (1929).
5. Cannavo, ref. Kongreßzbl. Inn. Med.51, 840 (1928).