@article{CTT100705161,
  author = {Xavier Defago and A. Schiper and P. Urbán},
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  journal = {ACM Comput. Surv.},
  year = 2004,
}

@article{CTT100705162,
  author = {Xavier Defago and A. Schiper},
  title = {Semi-passive replication and Lazy Consensus},
  journal = {J. Parallel Distrib. Comput.},
  year = 2004,
}

@article{CTT100705160,
  author = {P. Urbán and Xavier Defago and A. Schiper},
  title = {Neko: A Single Environment to Simulate and Prototype Distributed Algorithms},
  journal = {J. Inf. Sci. Eng.},
  year = 2002,
}