TY  - BOOK
AU  - Wirfs-Brock,Rebecca
AU  - McKean,Alan
TI  - Object design: roles, responsibilities, and collaborations 
SN  - 0201379430(pbk.) :
AV  - QA76.9.W57 2003 
PY  - 2003///
CY  - Boston, [Mass.]
PB  - Addison-Wesley
KW  - Object-oriented methods (Computer science)
N1  - Includes bibliographical references (p. 375-380) and index
ER  -