1. Bredemeijer, G. M. M.: Glutamate dehydrogenase in styles and pollen of Petunia hybrida. Acta bot. neerl. 19, 481–487 (1970)
2. de Nettancourt, D.: Self-incompatibility in basic and applied researches with higher plants. Genet. Agr. XXVI, 163–216 (1972)
3. Donk, J. A. W. M., van der: Differential synthesis of RNA in self- and cross-pollinated styles of Petunia hybrida L. Molec. gen. Genet. 131, 1–8 (1974)
4. Lewis, D. A.: A protein dimer hypothesis on incompatibility. In: Genetics to-day (S. J. Geerts ed.), vol. 3, p. 657–663. London: Pergamon Press 1965
5. Linskens, H. F.: Biochemistry of Incompatibility In: Genetics to-day (S. J. Geerts ed.), vol. 3, p. 629–635. London: Pergamon Press 1965