TY  - RPRT
TI  - User frustration with poor program design.
AU  - R K Helppi
AU  - P J MacInnis
AU  - J D Sherwood
AU  - H K Wolf
PY  - 1977
DO  - 10.1016/0010-4809(77)90001-5
UR  - https://pubmed.ncbi.nlm.nih.gov/891145/
ID  - 891145
ER  -