M. Hameed, S. (2006). A Steganographic Approach Based on Spetial Frequency Layering. , 9(2), 69-72.

Sarab M. Hameed. "A Steganographic Approach Based on Spetial Frequency Layering". , 9, 2, 2006, 69-72.

M. Hameed, S. (2006). 'A Steganographic Approach Based on Spetial Frequency Layering', , 9(2), pp. 69-72.

M. Hameed, S. A Steganographic Approach Based on Spetial Frequency Layering. , 2006; 9(2): 69-72.