DNA extraction from buried corpse

[Nicola Cucurachi]

Hello everybody!
Does any of you know an effective protocol for extracting DNA from
tissues taken from a buried corpse. I need it for a paternity
identification of a man died fifteen years ago.
I've specimens of muscle, teeth, tendons and bone taken from te body. I
suppose muscle should be the easiest tissue to extract DNA from, but I'm
not sure it's also the most valuable. 
Thanks for your help.

Nicola Cucurachi
Institute of Legal Medicine
University of Parma
Via Gramsci, 14   43100   PARMA   ITALY
e-mail cnic at ipruniv.cce.unipr.it