BibTex format
@article{Regner:2009:10.1016/j.jebo.2009.04.001,
author = {Regner, T and Barria, JA},
doi = {10.1016/j.jebo.2009.04.001},
journal = {Journal of Economic Behavior and Organization},
pages = {395--406},
title = {Do Consumers Pay Voluntarily? The Case of Online Music},
url = {http://dx.doi.org/10.1016/j.jebo.2009.04.001},
volume = {71},
year = {2009}
}