Paper  doi  bibtex   

@article{martinez_exponential_2016,
	title = {Exponential velocity profile of granular flows down a confined heap},
	volume = {93},
	issn = {2470-0045, 2470-0053},
	url = {http://link.aps.org/doi/10.1103/PhysRevE.93.062906},
	doi = {10.1103/PhysRevE.93.062906},
	language = {en},
	number = {6},
	urldate = {2017-02-02TZ},
	journal = {Physical Review E},
	author = {Martínez, E. and González-Lezcano, A. and Batista-Leyva, A. J. and Altshuler, E.},
	month = jun,
	year = {2016}
}