1. a) Über Chorionepitheliom. Anders: Zbl. Chir.1932, 1404.
2. Arendt: Fortschr. Röntgenstr.43, 6. Ref. Zbl. Chir.1932, 2379.
3. Aschheim u.Unger: Zbl. Chir.1932, 1404.
4. Bankoff: Arch. klin. Chir.188, 402 (1937). Ref. Zbl. Chir.1938, 1854.
5. Béclère: Presse méd.1934, 78. Ref. Zbl. Chir.1935, 1744.