Oil lingers below $50 over doubts OPEC can coordinate output cut

By Henning Gloystein SINGAPORE (Reuters) - Oil prices were stable on Thursday, but remained below $50 a barrel, as doubts over OPEC's ability to organise a coordinated production cut weighed on markets, while firm demand and concerns over Venezuela's stability offered support. International Brent crude oil futures briefly pushed above the psychological $50 a barrel mark, but had dipped back to $49.95 by 0153 GMT, 3 cents below their last closing price. Traders said Brent was struggling to break