TY  - BOOK
AU  - Spirn,Jeffrey R.
TI  - Program behavior: models and measurements 
SN  - 0444002197
PY  - 1977///
CY  - New York
PB  - Elsevier
KW  - Computer programs
KW  - Evaluation
N1  - Includes index; Bibliography: p.  264 -271
ER  -