The Book of Dzyan or Stanzas of Dzyan, connection with Bon religion? Options

I am searching for some realible information about so called "Stanzas of Dzyan" or "Book of Dzyan". It is mentioned in H. Blavatsky "Secret Doctrine" where she somehow connected This particular source with Bon religion ( maybe best described as "prebudistic", or even shamanistic tradition of Tibet). It is said that this particular texts are hidden somewhere in mysterious rock-libraries that the spurs of the Himalayas ..
Any information, (IMG:style_emoticons/default/40.gif)

PSW. sorry for my "bad english" it is not my native language... (IMG:style_emoticons/default/baby.gif)

As for right now the only reference material is the Secret Doctrine itself. There has been no evidence of the book actually being in existence although there are some texts that are close to it. The text may exist but it should be noted that there is no indication that Blavatsky understood sanskrit or tibetan languages or traveled to Tibet. She states herself that her translation is only fragments assembled to help the reader because the original is too difficult to understand. She and the theospohical society have never produced the text. This does not invalidate the writings of Blavatsky yet there is nothing to show that it is not entirely of her creation.