Does someone know of any good papers/books/references of properties of the so-called "Zassenhaus Filtration" of a group $G$ ? 


I'm mainly interested in relations between this filtration and closely related ones such as the lower central series (which I actually already found ) , the derived series, etc... 


Any good reference will be greatfully acknowledged! I really need to know some properties of this filtration, but can't find any good book/paper that contains such


Thanks in advance ! 



Group Theory- Zassenhaus Filtration & Other Filtrations
For a survey and applications of Zassenhaus filtration see [this](http://people.virginia.edu/~mve2x/Research/gssurvey_revised.pdf)  recent survey by Misha Ershov. For a "canonical" text see J. D. Dixon, M. P. F. du Sautoy, A. Mann and D. Segal, Analytic pro-p groups. Second edition. Cambridge Studies in Advanced Mathematics, 61. Cambridge University Press, Cambridge, 1999.


