From http://www.springeropen.com/books
> SpringerOpen books are published under the Creative Commons Non-Commercial (CC BY-NC) license, so they can be reused and redistributed for non-commercial purposes as long as the original author is attributed.
> SpringerOpen books are published under the Creative Commons Non-Commercial (CC BY-NC) license, so they can be reused and redistributed for non-commercial purposes as long as the original author is attributed.
Edit: looks like they've revoked access already in fact https://news.ycombinator.com/item?id=10811854