[JeanPierre]

I do agree that the structure is influenced by the paper, so I've added that in. I don't agree that they are "virtually identical" however, because there are significant differences leading to a lot of performance improvements (never any hash collisions, insertion and removal only at the end, resulting in perfect balancing, etc) and, as swanodette mentioned, Bagwell himself mentioned that they were pioneered by Hickey.

> Rich goes through this in one of his talks but I don't recall which.

If you figure out which, I'd love to know! :)