TY  - BOOK
AU  - Grandis, Marco.
TI  - Directed algebraic topology: models of non-reversible worlds 
SN  - 9780521760362
PY  - 2009///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Algebraic topology
N1  - Includes bibliographical references (p. 418-423) and index
ER  -