1. Allard R. W., 1970. Population structure and sampling method. p. 97–107. In: O. H. Frankel & E. Bennet (Eds), Genetic resources in plants-Their exploration and conservation. Blackwell Scientific Publications, Oxford and Edinborough.
2. Allard, R. W., A. L. Kahler & B. S. Weir, 1971. Isozyme polymorphisms in barley populations. p. 1–13. In: R. A. Nilan (Ed.) Barley genetics II. Proc. Second Intern. Barley Genet. Symp. Washington State Univ. Press.
3. Ashri, A., 1957. Cytogenetics and morphology of Carthamus L. species and hybrids. Ph.D. Dissertation. Univ. of Calif., Davis, Calif.
4. Ashri A. & P. F. Knowles, 1960. Cytogenetics of safflower (Carthamus L.) species and their hybrids. Agron. J. 52: 11–17.
5. Bassiri A., 1976. Barley cultivar identification by use of isozyme electrophoretic patterns. Can. J. Plant Sci. 56: 1–6.