1. Albertsson, P. Å.: Biochem. Biophys. Acta,27, 378 (1958).
2. Albertsson, P. Å.: Nature182, 709 (1958).
3. Albertsson, P. Å. andG. Frich: Biochem. Biophys. Acta. In press.
4. Albertsson, P. Å. andJ. E. M. Nyns: To be published.
5. Baumann, E. andK. Myrbäck: Die Methoden der Fermentforschung Vol. I, p. 785 (1941) Georg Thieme/Verlag, Leipzig.