1- پیمانیفرد، ب.، ملک پور ب. و فائزی پور، م.، 1373. معرفی گیاهان مهم مرتعی و راهنمای کشت آنها برای مناطق مختلف ایران. نشریه شماره 24 موسسه تحقیقات جنگلها و مراتع، تهران. ایران.
2- Annicchiarico, P., Piano, E., and Rhodes, I., 1999. Heritability of, and genetic correlations among, forage and seed yield traits in Ladino white clover. Plant Breeding. 118: 341-346.
3- Collins, R.P., Abberton, M.T., Michaelson-Yeates, T.P.T. and Rhodes, I., 1997. Response to divergent selection for stolon characters in white clover (Trifolium repens ). Journal of Agricultural Science. 129: 279-285.
4- Finne, M.A., Rognli, O.A. and Schjelderup, I., 2000. Genetic variation in a Norwegian germplasm collection of white clover (Trifolium repens L.). 3. Correlation and path coefficient analyses of agronomic characters. Euphytica. 112: 57-68.
5- Humphreys, M.O. 1991. A genetic approach to the multivariate differentiation of perennial ryegrass (Lolium perenne L.) populations. Heredity, 66: 437-443.
6- Jahufer, M.Z.Z., Cooper, M. and Brien, L.A., 1994. Genotypic variation for stolon and other morphological attributes of white clover (Trifolium repens L.). Populations and their influence on herbage yield in the summer rainfall region of New South Wales. Australian Journal of Agricultural Research. 45: 703-720.
7- Moussavi, M., 1979. List of plants of Evin Herbarium, Family: Leguminosae (Genus: Trifolium). Iranian Agricultural and Natural Resource Organization, Plant Pest and Disease Research Institute, Publication Tehran, Iran. No. 14, pages, 50.
8- Olimos, F., Wilman, D. and Hamilton, R.S., 2003. Variation between and within Trifolium repens L. populations collected from sown swards in Uruguay. Euphytica. 130: 131-141.
9- Pederson, C.A., 1995. With clover and other perennial clovers. In: “Forages” (Eds. Barnes, R. F., D.A. Miller and C. J. Nelson), Iowa State University Press, Iowa, USA, pages 227-236.
10- Peters J.P and Martinelli, J.A., 1989. Hierarchical cluster analysis as a tool manages variation in germplasm collections. Theoretical and Applied Genetics 78: 42-48.
11- Piano, E. and Annicchiarico, P., 1995. Persistence of Landio white clover ecotypes and its relationship with other agronomic traits. Grass and Forage Science: 50: 195-198.
12- Rhodes, I., 1987. Characterization of white clover. In: "Collection, Characterizationand utilization of genetics of temperate forage grasses and legumes"(Eds. Tyler, B.F.). International Board for Plant Genetics Resources (IBPGR), Rome, Italy.
)