1. Agrios G.N. (1988) Plant pathology, 3rd edn. Academic Press, London
2. Banuett F. (1991) Identification of genes necessary for filamentous growth and tumor induction of the plant pathogen Ustilago maydis. Proc Natl Acad Sci USA 88: 3922–3926
3. Banuett F., Herskowitz I. (1988) Ustilugo maydis, smut of maize. In: Sidhu G.S. (ed) Advances in plant pathology, vol 6, genetics of plant pathogenic fungi. Academic Press, London, pp 427–455
4. Banuett F., Herskowitz I. (1989) Different a alleles of Ustilago maydis are necessary for maintenance of filamentous growth but not for meiosis. Proc Natl Acad Sci USA 86: 5878–5882
5. Casselton L.A. (1978) Dikaryon formation in higher Basidiomycetes. In: Smith J.E., Berry D.R. (eds) The filamentous fungi, vol 3. Arnold, London, pp 275–297