"Review of Network Economics", 3.3 (2004): -. Retrieved 25 May. 2013, from http://www.degruyter.com/view/j/rne.2004.3.3/issue-files/rne.2004.3.issue-3.xml

Review of Network Economics (2004), 3(3), pp. -. Retrieved 25 May. 2013, from http://www.degruyter.com/view/j/rne.2004.3.3/issue-files/rne.2004.3.issue-3.xml

Review of Network Economics. 2004. 3(3): -. Retrieved 25 May. 2013, from http://www.degruyter.com/view/j/rne.2004.3.3/issue-files/rne.2004.3.issue-3.xml