If anyone would like to read more about the real lean techniques in software (not just kanban), I recommend Lean Software Strategies book.

https://www.amazon.com/Lean-Software-Strategies-Techniques-D...

The West has a tendency to cherry pick techniques from holistic approaches (for example quick path to mindfulness vs meditation and Buddhism). I suppose it's a cultural difference. In my opinion, it is really worth it to try to understand Lean as a whole instead of looking at kanban only.

Let me recommend you "Lean Software Strategies" book. It refers to many software development experiments and observations, some of them from Lockheed Martin. While the book does not claim to present the ultimate methodology, it draws on progress in other engineering disciplines to create a better, continuously improving process.

http://www.amazon.com/Lean-Software-Strategies-Techniques-De...