1. Allen, R. F.: A cytological study of Puccinia triticina physiologic form II on Little Club Wheat. J. Agric. Res. 33, 201?222 (1926
2. Bessey, E. A.: Morphology and taxonomy of fungi. Philadelphia: Blakiston 1952
3. Borst, P.: Mitochondrial nucleic acids. Ann. Rev. Biochem. 41, 333?376 (1972)
4. Burger, M. M.: S8rface changes in transformed cells detected by lectins. Fed. Proc. 32, 91?101 (1973)
5. Chakravarti, B. P.: Attempts to alter infection processes and aggressiveness of Puccinia graminis var. tritici. Phytopathology 56, 223?229 (1966)