1. Hawkes, J.G., The Potato, Evolution, Biodiversity, and Genetic Resources, London: Belhaven, 1990.
2. Davidse, L.C., Henken, J., van Dalen, A., et al., Nine Years of Practical Experience with Phenylamide Resistance in The Netherlands, Netherlands J. Plant Pathol., 1989, vol. 95, pp. 197–213.
3. Mendoza, H.A. and Haynes, F.L., Genetic Relationship among Potato Cultivars Grown in the United States, Hortscience, 1974, vol. 9, pp. 328–330.
4. Ross, H., Potato Breeding—Problems and Perspectives, Berlin: Paul Parey, 1986.
5. Salaman, R.N., The History and Social Influence of the Potato, in Revised Impression, Hawkes, J.G., Ed., Cambridge: Cambridge Univ. Press, 1985.