Boost Graph Library materials

Needed to compute max flow in a project and found the official document of BGL to be rather obscure, hence record some materials which I think can help to understand this library a little better:

This is the official book of boost. The explanation is clear and elaborate. Very good introduction, but the version of boost seems a little bit old and it does not cover flow computing:

https://theboostcpplibraries.com/boost.graph-vertices-and-edges

This IBM tutorial can serve as a supplement of the above official introduction:

https://www.ibm.com/developerworks/aix/library/au-aix-boost-graph/

Other than the examples in boost documents, I found this piece of codes especially helpful for building a flow network:

https://www.boost.org/doc/libs/1_69_0/boost/graph/read_dimacs.hpp

This seems to be just the compilation of all examples in boost documents, a little helpful anyway：

https://www.technical-recipes.com/2015/getting-started-with-the-boost-graph-library/

The following should be an in-depth explanation of the libary, however, I haven't read any:

https://markqiu.files.wordpress.com/2009/12/boost-graph-library.pdf

Of course, the boost document should serve as another in-depth explanation :-)