Thank you for your contributions. They are valued and appreciated.

Fair enough, thank you. - Still I'm blind as to whether a single global match is enough for all cases, since I have not seen other sample data. It certainly isn't more than saying 'citations end with \dZ)|pp.<something> and are followed by two letters', but as long as I see no contradictory data it is good enough... can't code for cases I haven't seen. So, saying

Since it doesn't have to be perfect this is fine but I am looking to improve if possible.

without giving more clues as to what needs improvement is, well... but of course, my regexp breaks on a citation beginning with e.g "J.Morgan"...