TY  - BOOK
AU  - Grubb,Penny
AU  - Takang,Armstrong A.
TI  - Software maintenance: concepts and practice 
SN  - 9812384251
AV  - QA76.76S64 G78 2003
PY  - 2003///
CY  - River Edge, New Jersey
PB  - World Scientific
KW  - Mantenimiento de software
ER  -