Corey Ladas' groundbreaking paper "ScrumBan" launched hundreds of software development teams on the path from iterations to flow.
Scrumban does not prescribe this transition, because each team has its own process needs. But if you are moving from Agile methods to Lean, Scrumban is the book that started it all.
Kanban also provides a powerful mechanism to identify process improvement opportunities. This book covers some of the metrics and day-to-day management techniques that make continuous improvement an achievable outcome in the real world.
ScrumBan the book provides a series of essays that give practitioners the background needed to create more robust practices combining the best of agile and lean.
Buy your own copy of Scrumban