How to check an already published journalism piece for plagiarism?
I hope this is the right place to ask. I read this published piece online written by a journalist; I know this person's writing style and could immediately see something was very off with this particular story they wrote. This person has a history of plagiarism.
I'm not asking for a tool to detect plagiarism only, but how to find the 'sources' this person plagiarized.
I've already tried a few "engines" but the problem seems to be that since this piece is already published online, the software points to the very article that I'm trying to check. Hope that makes sense. Can I solve that problem?
Also, the article in question is not in English, but Danish. However, I can tell from the text that the reporter has copy-pasted parts of English text(s) and converted them into Danish. The translation is done by a machine. (It's not that difficult to see if you are a native speaker of both languages)
I would appreciate any hints! I am not tech savvy, just fyi :)