The price of oil slipped back slightly on Thursday as concerns waned over the Ukrainian crisis and the economic slowdown in emerging markets.

By early afternoon in Europe, benchmark U.S. crude for April delivery was down 35 cents to $100.02 a barrel in electronic trading on the New York Mercantile Exchange. The contract, which expires Thursday, gained 67 cents to $100.37 the day before. Most trading has moved to the May contract, which was down 36 cents at $98.81 a barrel.