Markus Hinkelmann Andreas Jakoby Peer Stechert <i>t</i>-Private and <i>t</i>-Secure Auctions. 694-710 2008 23 J. Comput. Sci. Technol. 5 http://dx.doi.org/10.1007/s11390-008-9174-3 db/journals/jcst/jcst23.html#HinkelmannJS08