1. AMMI analysis of rainfed lowland rice (Oryza sativa) trials in Nigeria
2. 2W. Adugna , 2000 : Assessment of tissue culture derived regenerants of linseed (Linum usitatissimumL.) in Ethiopia . MSc Thesis, Dept of Plant Breeding, Faculty of Agric., Univ. of the Free State, Bloemfontein, South Africa.
3. 3W. Adugna, and T. W. Adefris , 1995 : Agronomic performance of linseed regenerants at two locations in Ethiopia . Sebil. Proc. 7th Annu. Conf. Crop Sci. Soc. of Ethiopia (CSSE), 27-28 Apr. 1995, Addis Abeba, 9-21.
4. 4Agronomix Software, Inc., and Agrobase , and , 1998 : Addendum, 1998:AGROBASETM. Agronomix Software, Inc., Winnipeg.