TY  - BOOK
AU  - Zenil,Hector
AU  - Penrose,Roger
TI  - A computable universe: understanding and exploring nature as computation 
SN  - 9789814374293
PY  - 2013///
CY  - Singapore
PB  - World Scientific
KW  - Computational complexity
N1  - Includes bibliographical references and index
ER  -