Y. - H.  Chen and Chang, C. - C., ?Image tamper detection and recovery based on dual watermarks sharing strategy?, Journal of Digital Information Management, vol. 10, no. 1, pp. 39 - 49, 2012.

W. K.  Hidouchi and Ezegour, D., ?An actor like data model for a parallel DBMS?, Journal of Digital Information Management, vol. 6, no. 3, pp. 262 - 271, 2008.