@article {cimprich2017extending,
	title = {Extending the geopolitical supply risk method: material �substitutability� indicators applied to electric vehicles and dental X-ray equipment},
	journal = {The International Journal of Life Cycle Assessment},
	year = {2017},
	pages = {1{\textendash}19},
	publisher = {Springer Berlin Heidelberg},
	author = {Cimprich, Alexander and Karim, Karim S and Young, Steven B}
}