1. Baron, H.: Arch. exper. Path. (D.)201, 186 (1943).
2. Baron, H.: Med. Mschr.1, 434 (1947).
3. Ceccarelli: Ref. Z.org. Chir.51, 656.
4. Harvey, Clark u.Howes: Ref. Z.org. Chir.51, 289.
5. Buttersack: Zit. nachH. Tammann. Bruns' Beitr.157, 73 (1933).