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by Goodrich, Michael T. ; Tamassia, Roberto and Goldwasser, Michael H.
by Rajaraman, V. and Murthy, C. Siva Ram.
by Chaudhury, P. Pal.
by Bose, Ranjan.
by Schildt, Herbert.
by Basham, Bryan; Sierra, Kathy and Bates, Bert.