Compiiler Design

"I have published a textbook on Compiler Design. Designed with undergraduates in mind who have difficulty with the so called "Dragon" book, it was first published in 1994 by Wm. C. Brown Publishers, and was then distributed for a year by Richard Irwin Publishers. I have recently obtained the copyright and am now distributing this book myself."

Copyright to the Dragon book or to his own book? Cannot be parsed unambiguously :-)

That said did people really have trouble with Aho and Ullman? It seemed liked an incredibly approachable book when I took my undergraduate compiler class.