@Article{esponda09a, author = {F. Esponda and S. Forrest, and P. Helman}, title = {Negative Representations of Information}, journal = {International Journal of Information Security}, year = {2009}, OPTkey = {}, volume = {8}, number = {5}, pages = {331-345}, month = {October}, OPTnote = {Submitted in 2006}, OPTannote = {} }