The Gebstadter bibliography on the website for Stepford Ninniversity's "Residential Pictures in Mundanities and Artifice" gives the subtitle as Fairy Tales and Rotations on Ego and Anima.
Gebstadter's fourth book, presumably in Italian, is entitled Ambifoni: un minimondo ottimo per lo studio della scopertività, published by Hopeless Mobster, Tokyo, in 1987.
[2] Curiously, there is no mention of Gebstadter's fifth book in Hofstadter's Fluid Concepts and Creative Analogies: Computer Models of the Fundamental Mechanisms of Thought.
Reviewers have supposedly described it as "an eclectic jumble, distended and unfocused," and some have suggested that Hofstadter's Fluid Analogies Research Group was reluctant to give recognition to the work of a rival lab which they sometimes referred to as "those SMUG copycats."
Gebstadter's sixth book is called The Graced Tone of Clément: A la louange de la mélodie des mots, and is referred to in Hofstadter's book Le Ton beau de Marot: In Praise of the Music of Language.