1. M.S. Ramadan, Report on Potato Production in Egypt. International Potato Course: Production, Storage, and Seed Technology. Report of Participants. International Agricultural Center, Wageningen, The Netherlands, 1981.
2. World Catalogue of Potato Varieties,2003
3. Economic and Statical Research Institute;Anonymous,2011
4. M. Gaurav, College of health and human sciences, department of food science and human nutrition (Ph.D. thesis), Colorado State University, Colorado, 2012.
5. Comparison of multivariate statistical algorithms to cluster tomato heirloom accessions