@incollection{, E4FA6565F42DEB602D7051F8979371C3 , author={{Munyaneza Jean deDieu} and {TUMBA COLLEGE OF TECHNOLOGY}}, journal={{Global Journal of Researches in Engineering}}, journal={{GJRE}}2249-45960975-586110.34257/gjre, address={Cambridge, United States}, publisher={Global Journals Organisation}1542529 } @book{b0, , title={{Energy Efficiency and Renewable Energy}} , author={{ SamBaldwin }} , year={2011} 9 U.S Department of Energy: DOE/EE-0404 } @book{b1, , author={{ EdwinAdkins }} , title={{Field testing and survey evaluation of household biomass cook stoves in rural sub-Saharan Africa}} , year={2010} 14 , note={Energy for sustainable development} } @book{b2, , title={{Emissions and efficiency of improved wood burning cook stoves in highland Guatemala}} , author={{ PJohn } and { KirkRMccracken } and { Smith }} , year={1998} 24 University of California: Environment International } @book{b3, , author={{ ErnestMazimpaka }} , title={{Woodfuel in Rwanda: Impact on Energy, Poverty and the Environment}} , year={2012} University of Cape Town }