TY  - BOOK
AU  - Penrose, Roger
TI  - Shadows of the mind : a search for the missing science of consciousness 
SN  - 978-0-09-958211-3
U1  - 006.3 PEN 
PY  - 1994///
CY  - Oxford ; New York 
PB  -  Oxford University Press
KW  - Artificial intelligence
ER  -