TY  - RPRT
TI  - STEP file analyzer user's guide (version 4) 
AU  - Lipman, Robert R
PY  - 2017
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST AMS 200-4
DO  - 10.6028/NIST.AMS.200-4
ER  -