I have seen an unpublished version of this work sometime ago. In fact, I edited a very early copy of the material but I do not think Urshalmi was pleased with the liberties I took, language barriers, etc. Needless to say, I am intimate with at least one version of this work. This is a significant contribution to guitar literature. Some concepts may be familiar, while others may be very new. Even the familiar concepts may speak to the reader from a different vantage point. Urshalmi is a good read and ought to be on one's library.
Dr. Todd Tipton, Noda Guitar Studio
Charlotte, NC, USA (available via Skype)