@article{publication-14353,
	author={Pohl, Walt},
	doi={10.1016/j.econlet.2016.07.019},
	issn={0165-1765},
	journal={Economics Letters},
	pages={140-142},
	publisher={Elsevier},
	title={External habit: Anything goes},
	volume=146,
	year=2016,
}