1. Microbiological Transformation of Steroids;Akhrem,1965
2. Microbiul Transformations of Steroids;Charney,1967
3. 7- and 15-hydroxyprogesterones;Fried,1956
4. 15-Hydroxyprogesterones;Fried,1959
5. Die Arten der Gattung Colletolrichum Cda;Von Arx;Phytopath. Z.,1957