"Forum Mathematicum", 15.1 (2003): 1-163. Retrieved 18 May. 2013, from http://www.degruyter.com/view/j/form.2003.15.issue-1/issue-files/form.2003.15.issue-1.xml

Forum Mathematicum (2003), 15(1), pp. 1-163. Retrieved 18 May. 2013, from http://www.degruyter.com/view/j/form.2003.15.issue-1/issue-files/form.2003.15.issue-1.xml

Forum Mathematicum. 2003. 15(1): 1-163. Retrieved 18 May. 2013, from http://www.degruyter.com/view/j/form.2003.15.issue-1/issue-files/form.2003.15.issue-1.xml