Title	Non-expansion Visual Secret Sharing in Reversible Style
Author	Wen-Pinn Fang
Citation	Vol. 9  No. 2  pp. 204-208
Keywords	Visual Cryptography, Random grid, Reversible, Non-expansion

Title	Visual Cryptography Scheme for Secret Image Retrieval
Author	M. Sukumar Reddy, S. Murali Mohan
Citation	Vol. 14  No. 6  pp. 41-46
Keywords	Visual Cryptography(VC), Random Grids(RGs), Secret Sharing , Contrast