Bengt - I do have a bunch of cites. But none readily accessible right now. The only ones I can remember off hand are Grossfield (Grossfeld? ? ?) and Tunn.
The Tunn study is not yet published (but it is referenced in other papers) and is the closest in protocol to P-11.
Do a search on Intermittent Androgen Deprivation (IAD) on Medscape.