@article{economics2007-9,
 author = {Friedrich Schneider},
 title = {Shadow Economies and Corruption All Over the World: What Do We Really Know?},
 journal = {Economics: The Open-Access, Open-Assessment E-Journal},
 volume = {1},
 year = {2007},
 number = {2007-9},
 url = {http://www.economics-ejournal.org/economics/discussionpapers/2007-9}
}