Charly
It is my understanding that the apple juice or malic acid just softens up the stones. Olive oil and lemon juice help produce bile that releases and pushes out the stones. Magnesium relaxes the liver so the stones will come out easily.
There are several good protocols... the one I use is at the bottom of the article on this link:
Re: Can U describe the recipe of LF? n/m at Liver Flush Support Forum #26 NEW
http://curezone.com/forums/fm.asp?i=182920