@INPROCEEDINGS{ButtyanHV-2006-pet,
    author        = {Butty\'an, Levente and Holczer, Tam\'as and Vajda, Istv\'an},
    title         = {{Optimal Key-Trees for Tree-Based Private Authentication}},
    booktitle     = {Workshop on Privacy Enhancing Technologies -- PET 2006},
    year          = {2006},
    editor        = {George Danezis and Philippe Golle},
    volume        = {4258},
    series        = {Lecture Notes in Computer Science},
    pages         = {332--350},
    address       = {Cambridge, United Kingdom},
    month         = {June},
    organization  = {},
    publisher     = {Springer},
   bibsource     = {Information Security Group (GSI), UCL, Louvain-la-Neuve, Belgium},
}