@article {cimprich2017extension,
	title = {Extension of geopolitical supply risk methodology: Characterization model applied to conventional and electric vehicles},
	journal = {Journal of Cleaner Production},
	volume = {162},
	year = {2017},
	pages = {754{\textendash}763},
	publisher = {Elsevier},
	author = {Cimprich, Alexander and Young, Steven B and Helbig, Christoph and Gemechu, Eskinder D and Thorenz, Andrea and Tuma, Axel and Sonnemann, Guido}
}