"Frequenz", 46.7-8 (1992): 177-216. Retrieved 24 May. 2013, from http://www.degruyter.com/view/j/freq.1992.46.7-8/issue-files/freq.1992.46.7-8.xml

Frequenz (1992), 46(7-8), pp. 177-216. Retrieved 24 May. 2013, from http://www.degruyter.com/view/j/freq.1992.46.7-8/issue-files/freq.1992.46.7-8.xml

Frequenz. 1992. 46(7-8): 177-216. Retrieved 24 May. 2013, from http://www.degruyter.com/view/j/freq.1992.46.7-8/issue-files/freq.1992.46.7-8.xml