I was reading a preprint on archives (not yet published), and in the introduction the authors say "Following X in [ref]..." and go on to set up the problem. When I went to [ref], it turns out the authors of the preprint actually take three paragraphs word for word from X and include them in their introduction.
Is this appropriate? Just saying "Following X...." makes it okay? To me, it still looks like plagiarism.
