1. Ierna, A. (2010). La coltivazione per seme botanico (TPS). In:La Patata.Bayer CropScience, Script Ed., Bologna, Italy. 2–11. (In Italian).
2. Mendoza, H. (1983). Selection of uniform progenies to use TPS commercial potato production.Report of 16th Planning Conference. Present and Future Strategies for Potato Breeding and Improvement.International Potato Center (CIP), Lima, Peru. 87–97.
3. Pallais, N., Fong, N. and Berrios, D. (1984). Research on the physiology of potato sexual seed production. Innovative methods for propagating potatoes.Report of the 28th Planning Conference.International Potato Center, Lima, Peru. 149–168.
4. Pallais, N., Huaman, Z. and Hopmans, S. (1987a). Screening true potato seed of native Andean cultivars for germinability under high temperature.Proceedings of the 10th Triennal Conference of the European Association for Potato Research.Aalborg, Denmark. 292–293.
5. Snedecor, G. W. and Cochran, W. G. (1989).Statistical Methods.8th Edition. Iowa State University Press, Ames, IA, USA. 503 pp.