@article{DBLP:journals/tissec/YaoT09,
author = {Danfeng Yao and
Roberto Tamassia},
title = {Compact and Anonymous Role-Based Authorization Chain},
journal = {ACM Trans. Inf. Syst. Secur.},
volume = {12},
number = {3},
year = {2009},
ee = {http://doi.acm.org/10.1145/1455526.1455528},
bibsource = {DBLP, http://dblp.uni-trier.de}
}