Redl - Boost Range slides
https://github.com/boostcon/cppnow_presentations_2012/blob/master/tue/boost_range.pdf

Alexandrescu - On Iteration
http://www.informit.com/articles/printerfriendly.aspx?p=1407357

SO-Ranges:
http://stackoverflow.com/questions/13241740/composing-adaptors-in-boostrange
http://stackoverflow.com/questions/13144280/lazy-transform-in-c