hi cosmo-torun,
These two articles may be useful especially for Zbyszek and
Bartek:
* n-body review http://arxiv.org/abs/1106.1082v1 Dehnen and Read
* correction by Adrian Melott http://arxiv.org/abs/1105.1774
i'm not sure if there's anything especially new in 1106.1082, but
figs 5 and 6 look nice, and reading a review paper you can often
find something you didn't know before.
pozdr
boud