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²  Ashraf M. A. Abdalla and Noboru Sekino. 2004. Veneer strand flanged I-beam with MDF or particleboard as web material II: effect of resin type, application rate, strand dimension, and pressing time on the basic properties. Journal of wood science  50: 400-406

²  Ashraf M. A. Abdalla and Noboru Sekino. 2005. Veneer strand flanged I-beam with MDF or particleboard as web material III: Effect of strand density and preparation method on the basic properties. Journal of wood Science 51:492-497

²  Abdelazim Yassin Abdelgadir and Ashraf M. Ahmed Abdalla. 2005. Effect of wood pretreatments on the modulus of rupture of Acacia nilotica wood-cement aggregate. Sudan Silva 11(1): 79-84

²  Ashraf M. A. Abdalla and Noboru Sekino. 2006. Veneer strand flanged I-beam with MDF or particleboard as web material IV: Effect of web material types and flange density on the basic properties. Journal of wood science 52:167-172

²  Ashraf M. A. Abdalla; Noboru Sekino and Yamauchi Hedfume. 2006). Veneer strand flanged I-beam with MDF or particleboard as web material V: Its production and performance under steam injection pressing. Bulletin of the Iwate University Forests. 2006 No. (37): 1-16

²  Ashraf M.A. Abdalla and A.Y. Abdelgadir. 2006. Effect of particle size and cement/wood ratio on some properties of Acacia nilotica wood-cement aggregates. Sudan Silva 12(1): 41-52

²  Ashraf Mohamed Ahmed Abdalla;  Tarig Tag Elsir Hassan ; Abdelazim Yassin Abdelgadir and Abdael Lateif El Tayeb Mahoumd. 2010. Effect of cold water duration extraction and calcium chloride treatment on physical properties of Acacia nilotica wood-cement aggregates. Sudan Silva 14(1): 1-9