TY  - RPRT
TI  - Paper simulation techniques in user requirements analysis for interactive computer systems
AU  - Ramsey, H. R.
AU  - Atwood, M. E.
AU  - Willoughby, J. K.
PY  - 1979
UR  - https://ntrs.nasa.gov/citations/19800039860
ID  - 19800039860
ER  -