books.google.co.uk - In Lean Software Development, Mary and Tom Poppendieck identify seven fundamental "lean" principles, adapt them for the world of software development, and show how they can serve as the foundation for agile development approaches that work. Along the way, they introduce 22 "thinking tools" that can help...http://books.google.co.uk/books/about/Lean_software_development.html?id=hQk4S7asBi4C&utm_source=gb-gplus-shareLean software development