@inproceedings{CFIJ99,
 author    = {Giovanni Di Crescenzo and Niels Ferguson and Russell Impagliazzo and and Markus Jakobsson},
 title     = {How to Forget a Secret},
 booktitle = {STACS 99},
 year      = {1999},
 pages     = {500--509},
 note      = {LNCS 1563},
 publisher = {Springer-Verlag}
 }