Yes, it's tough to find web resources on this. Here is a google books search result: https://books.google.com/books?id=TEa0yDByYmQC&pg=PT232&lpg=PT232&source=b

Yes, it's tough to find web resources on this. Here is a google books search result: https://books.google.com/books?id=TEa0yDByYmQC&pg=PT232&lpg=PT232&source=bl&ots=AUuEXAvjwL&sig=F8suew3vBzQR--fPh5pmHmSFaGs&hl=en&sa=X&redir_esc=y#v=onepage&q&f=false https://books.google.com/books?id=TEa0yDByYmQC&pg=PT232&lpg=... I'm mostly taking this on good authority from a friend who works in mobile engineering. So, caveat there.