TY  - BOOK
AU  - Shishko,Robert
ED  - Research and Development Corporation,
TI  - An optimal control model of product improvement R & D
T2  - The Rand paper series
PY  - 1971///
CY  - Santa Monica, California
PB  - Rand Corporation
KW  - Research, Industrial
KW  - Management
KW  - Mathematical optimization
N1  - Includes bibliographical references: page 32
ER  -