harvard - modify \possessivecite

Question

I am writing reports in norwegian, and I would like to modify the \possessivecite command of the harvard package to automatically add the possessive ' (just an apostrophe) in citations when the author's last name ends in s/sh/sj/rs/z. When the author's name ends in any other letters, the possessive should be just s (no apostrophe).

Is this even possible?

Answer 1

The possessive 's is hard-coded into harvard.sty. You could modify the code, including the appropriate tests for the text, but I suspect this is more effort than it is worth. As Audrey has commented, switching to biblatex is probably the best long-term solution here.