I don't know if this is the correct community to ask this question, but I did not find a community directly related to lean manufacturing. Recently I came across a term I haven't heard before: BVA (Business-Added-Value). I am writing my Master's Thesis, and I didn't come across this term during my literature review. However, this is relevant to the scope of my work, and I need to find a good book related to BVA. My review covered a lot of the "old bibles" The Toyota Way, Lean Thinking, etc.. And none of them mentions it. Does anyone know of a useful reference covering BVA? Thanks in advance.