Oil prices were little changed on Monday following a steep fall in the previous session amid growing expectations that the joint OPEC and non-OPEC ministerial meeting later in the day would address rising production from Nigeria and Libya, two OPEC members exempted from the cuts. Six OPEC and non-OPEC ministers will meet on Monday in St Petersburg to discuss the market outlook and compliance with output cuts. The joint OPEC/non-OPEC ministerial committee could also discuss a deeper cut in production, but more studies are needed, according to one of the sources.