@inproceedings{Jakobsson99,
 author    = {Markus Jakobsson},
 title     = {On Quorum Controlled Asymmetric Proxy Re-encryption},
 booktitle = {PKC '99: Proceedings of the Second International Workshop on Practice and Theory in Public Key Cryptography},
 year      = {1999},
 isbn      = {3-540-65644-8},
 pages     = {112--121},
 note      = {LNCS 1560},
 publisher = {Springer-Verlag},
 address   = {London, UK},
 }