@book{82198,
	author = { G.R.Breag, A.P.Harker and A.E.Smith.},
	title = {An introduction to small scale natural draught wood-fired furnace system},
	publisher = {T.D.R.I.},
	year = {1986},
	series = {Tropical Development and Research Institute; G 194},
	address = {London}
}