Revisiting Coroutines (2004) [pdf]

Given recent discussions of coroutines here on HN (e.g. https://news.ycombinator.com/item?id=16947033) this paper might be interesting to some. It has a good overview of approaches to coroutines, relates them to continuations, and discusses some of the uses and issues that arise.

There is an extensive literature on continuations, and they've been more widely studied than coroutines, but they probably aren't presented in a way that is accessible without some background reading. This paper might be a good way to acquire that background.