New Efficient Error-Free Multi-Valued Consensus with Byzantine Failures
  In this report, we investigate the multi-valued Byzantine consensus problem. We introduce two algorithms: the first one achieves traditional validity requirement for consensus, and the second one achieves a stronger "q-validity" requirement. Both algorithms are more efficient than the ones introduces in our recent PODC 2011 paper titled "Error-Free Multi-Valued Consensus with Byzantine Failures". 
Guanfeng Liang and Nitin Vaidya
cs.DC