GODEL, ESCHER, BACH:
HOFSTADTER, DOUGLAS R.
GODEL, ESCHER, BACH: an Eternal Golden Braid - BASIC BOOKS 1980
METAMATHEMATICS
SYMMETRY
ARTIFICIAL INTELLIGENCE
BACH, JOHANN SEBASTIAN--1685-1750
ESCHER, MAURITS CORNELIS--1898-1971
GODEL, ESCHER, BACH: an Eternal Golden Braid - BASIC BOOKS 1980
METAMATHEMATICS
SYMMETRY
ARTIFICIAL INTELLIGENCE
BACH, JOHANN SEBASTIAN--1685-1750
ESCHER, MAURITS CORNELIS--1898-1971