it was in his AIM book in the chapter about how he developed AIM. books.google.com/books?id=N-upQOrCFBEC&pg=PT34&lpg=PT34&dq=double+down+averaging+lichello&source=bl&ots=QSXjoE-LRL&sig=lPdm4sBVibVspWoSKWApDvLAFcg&hl=en&ei=bvy3TtfIMsSc2AWLg9TMDQ&sa=X&oi=book_result&ct=result&resnum=1&ved=0CB0Q6AEwAA#v=onepage&q&f=false Double dollar averaging