I'm not sure if it's actually a trend, but recently I've been noticing Wikipedia references to what seem to be random undergraduate papers, maybe not even hande

I'm not sure if it's actually a trend, but recently I've been noticing Wikipedia references to what seem to be random undergraduate papers, maybe not even handed in or graded, let alone published. If that sort of thing is acceptable for real, then anyone could go one step further and write anything that superficially looks like a "D" student's paper and use it to support an article. And the last one I saw, the reference said that the referred to part, in turn, referenced Wikipedia. Kind of making the xkcd about "citogenesis" come true.