A worker is pictured in a small factory producing solid fuel boilers for heating and wood stoves in Brovary...
A worker is pictured in a small factory producing solid fuel boilers for heating and wood stoves in Brovary, near Kiev, November 11, 2014. Months of dispute with Russia on gas prices raise fears on stable gas supply to Ukraine this winter and people are looking for alternative energy sources. REUTERS/Gleb Garanich (UKRAINE - Tags: ENERGY POLITICS)