Kotzamanidis, S.T., A. S. Lithourgidis, and D.G. Roupakias. 2009. “Short Communication. Plant Density Effect on the Individual Plant to Plant Yield Variability Expressed As Coefficient of Variation in Barley”. Spanish Journal of Agricultural Research 7 (3), 607-10. https://doi.org/10.5424/sjar/2009073-457.