TY  - RPRT
TI  - Engineering Change Management Concepts for Systems Modeling 
AU  - Bock, Conrad
AU  - Feeney, Allison Barnard
PY  - 2013
PB  - National Institute of Standards and Technology
SN  - NIST IR 7922
DO  - 10.6028/NIST.IR.7922
ER  -