@article {Kopp:2016yji,
	title = {Impeded Dark Matter},
	journal = {JHEP},
	volume = {12},
	year = {2016},
	pages = {033},
	doi = {10.1007/JHEP12(2016)033},
	author = {Kopp, Joachim and Jia Liu and Slatyer, Tracy R. and Wang, Xiao-Ping and Xue, Wei}
}
