TY  - BOOK
AU  - Aigner,Martin
TI  - A course in enumeration 
T2  - Graduate texts in mathematics
SN  - 9783540390329 (hbk.)
PY  - 2007///
CY  - Berlin
PB  - Springer
KW  - Combinatorial enumeration problems
N1  - Includes bibliographical references (p. 90) and index
ER  -