1. Ashri, A., 1957. Cytogenetics and Morphology of Carthamus L. Species and their Hybrids. Ph.D. Thesis. University of California, California, USA.
2. Inheritance studies with fertile interspecific hybrids of three Carthamus L. species;Ashri;Crop Sci.,1964
3. Genic and chromosomal homology between three Carthamus species;Ashri;Isr. J. Agric. Res.,1965
4. Cytogenetics of safflower Carthamus L. species and their hybrids;Ashri;Agron. J.,1960
5. Taxonomy and the biological species concepts in cultivated plants;Baker,1970