@Article{economics.ja.2009-31,
 author = {Konno, Tomohiko},
 title = {Network Structure of Japanese Firms. Scale-Free, Hierarchy, and Degree Correlation: Analysis from 800,000 Firms},
 journal = {Economics: The Open-Access, Open-Assessment E-Journal},
 volume = {3},
 year = {2009},
 number = {2009-31},
 doi = {10.5018/economics-ejournal.ja.2009-31}, 
 url = {http://dx.doi.org/10.5018/economics-ejournal.ja.2009-31}
}