I am computer programmer and I need to implement the Passing-Bablok method in one application I have. Yet, I am a little stuck since I don't really find good references on how this is done programatically.

Can some one recommend me a book that explains in details how the method works so I can program it in my application?

Another option is if some know of an open-source statistics package that performs the methods, so I can take a look at the implementation.

thank you.