TY  - BOOK
AU  - Gamma, Erich.
AU  - Helm, Richard
AU  - Johnson, Ralph
AU  - Vlissides, John
TI  - Design Patterns: Elements of reusable object-oriented software
SN  - 9789332555402
U1  - 005.12 
PY  - 2016///
CY  - New Delhi
PB  - Pearson Education
KW  - Object-oriented programming (Computer science
KW  - Computer software
KW  - Reusability
KW  - Software patterns
N1  - Includes bibliographical references (p. 375-381) and index
UR  - http://www.uml.org.cn/c++/pdf/DesignPatterns.pdf
ER  -