M.Y. Naz, S.A. Sulaiman, S. Shukrullah and M. Sagir
Trends in Applied Sciences Research 9 ( 1 ): 43 - 53 , 2014
S. Shukrullah, N.M. Mohamed, M.S. Shaharun and M.Y. Naz
Trends in Applied Sciences Research 9 ( 3 ): 121 - 131 , 2014