DPOS is not that difficult to understand: A number of block producing nodes are elected consciously (by approval voting which is the only thing that is a bit tricky to understand) by shareholders / coinholders. These nodes than take turns procuding blocks and are shuffled after every round in which each node has produced a block. Can all be read here
https://bitshares.org/technology/delegated-proof-of-stake-consensus/ TPTB_need_war what more are you looking for?
There is no analysis on the various different attack vectors and how DPOS copes with each one:
* Sybil attack
* Nothing at stake style attacks (long range, short range, keys from the past, etc etc)
* Voter apathy and response times to an ongoing attack
In short, everything that a decent white paper should address in order to be considered seriously.