Since Skip brings up the issue of an editor of Sustainability who wrote a book and then cited that book, let's have a look at this from another perspective. Skip objected to this [[1]] [[2]] and referred it to the[conflict of interest noticeboard] where it was found that there was no issue. Despite this finding, he has brought it up again a few times [[3]] [[4]] [[5]] [[6]] [[7]] [[8]] [[9]] [[10]] [[11]][[12]]...by which time GT had removed all references to his book from all articles, however this did not stop Skip raising the issue a few more times [[13]] [[14]] [[15]] [[16]] and now he is raising it again on this page. Does that qualify as vexatious?