Thanks for the paper Daniel. Very easy to read and understand.

I believe I might have found a minor typo that made me scratch my head for a second. On page 3 in the part where you describe the "follow pointers" part of the algorithm you wrote vi=sj and then cpi=csj whereas I believe you meant cvi=csj and that we can now replace vi with csj to make it cvi. Let me know if I'm misunderstanding something here.