- Dan Klein and Chris Manning, "Corpus-Based Induction of Syntactic Structure: Models of Dependency and Constituency"
- Kristina Toutanova, Christopher D. Manning, and Andrew Y. Ng., "Learning Random Walk Models for Inducing Word Dependency Distributions."
- Andy Cheadle, Tony Field, Simon Marlow, Simon Peyton Jones, Lyndon While, "Non-stop Haskell"
- and looking up stuff I've read before in papers I've read by Mark Newman and Philip Wadler.
It's about garbage collection. One known approach to incremental copying garbage collection is basically whenever you access a pointer you check whether it points into the old region and if so you move it to the new region. This turns out to work well for Haskell because accessing data always goes through a method call anyway, so the check+copy can sorta be inserted in recently-moved objects to wrap around the method call.
(Of course, it's more complicated than that.)