1. Abo El-Zahab, A. A., Mourad, N. K. and Abo Kaied, H. M. Genotype-environment interaction and evaluation of flax genotypes. 1-Straw yield. Proc. 6th Conf. Agron., Al-Azhar Univ., Cairo, Egypt. Vol. I, pp.129–152.
2. Abo El-Zahab, A. A., Mourad, N. K. and Abo Kaied, H. M. Genotype-environment interaction and evaluation of flax genotypes. II-long fiber yield, yield components and fiber fineness. Proc. 6th Conf. Agron., Al-Azhar Univ., Cairo, Egypt. Vol. I, pp.153–170.
3. Ph.D. Thesis;Abo Zaid T. A.,1997
4. Environmental and genotype-environmental components of variability V. Segregating Generations