Thanks! The second link is really excellent (as is the first, but I've already read it). I also found this paper in the refs, which seems really good. [0] [0

Thanks! The second link is really excellent (as is the first, but I've already read it). I also found this paper in the refs, which seems really good. [0] [0] https://drkp.net/papers/ssi-vldb12.pdf https://drkp.net/papers/ssi-vldb12.pdf