@booklet {53839,
	title = {Tar sands pipeline safety risks},
	year = {2011},
	publisher = {Natural Resources Defense Council New York New York.   15 pp.},
	keywords = {chemistry, oil sand characteristics, pipeline, risk / risk analysis},
	url = {http://www.nrdc.org/energy/files/tarsandssafetyrisks.pdf},
	author = {Swift, A. and Casey-Lefkowitz, S. and Shope, E.}
}
