1. Christensen CM, Kaufmann HH. Microflora. In: Christensen CM (ed), Storage of Cereal Grains and their Products, St. Paul: American Association of Cereal Chemists, 1974: 158–92.
2. Christensen CM, Sauer DB. Microflora. In: Christensen CM (ed), Storage of Cereal Grains and Their Products. St Paul: American Association of Cereal Chemists, 1982: 219–40.
3. Mycock DJ, Berjak P. Paradoxical behaviour of seed-storage and field fungi: an overview. S Afr J Sci 1992; 88: 371–75.
4. McLean M, Berjak P. Maize grains and their associated mycoflora — a micro-ecological consideration. Seed Sci & Technol 1987; 15: 831–50.
5. Hsieh DPH. Mode of action of mycotoxins. In: Hsieh DPH (ed), Mycotoxins in Food. Cambridge: Academic Press, 1987: 149–76.