Navigate on the Right? The Jury is Still Out
http://www.syntagm.co.uk/design/articles/navright.htm

Hudson, William
Syntagm
2002

Abstract:

My own view is that we need more data before we can know whether right navigation is going to be a real improvement. To collect this data, we should allow users to work as normal and set them realistic tasks, with navigation being varied in both location and size.