On Conflict and Consensus, by LT Butler and Amy Rothstein
On Conflict and Consensus: A handbook on Formal Consensus decision-making
CT Lawrence Butler and Amy Rothstein
This little booklet (63pp) is the one definitive guide to Consensus decision-making. It has chapters on conflict, decision-making, roles, evaluation, techniques, and a good intro chapter on the advantages of consensus. -LTed
See the document here On Conflict and Consensus