TY  - RPRT
TI  - Federal Information Processing Standards Publication: graphical kernel system (GKS) 
PY  - 1991
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST FIPS 120-1-1991
DO  - 10.6028/NIST.FIPS.120-1-1991
ER  -