Who really won Nevada Democratic caucuses?

While there is no doubt Mitt Romney won the Nevada Republican Caucuses, there is considerable doubt about the winner on the Democratic side.
Hillary Clinton has been projected the winner with 51 percent of the vote, compared to 45 percent for Barack Obama, but that may not give her the most delegates. The Obama camp is saying that it has won 13 delegates, compared to 12 for Mrs. Clinton. Mrs. Clinton says she has 13 delegates to 12 for Obama.