@misc{indiciaea07a7d109c40,
  title = {User frustration with poor program design.},
  author = {R K Helppi and P J MacInnis and J D Sherwood and H K Wolf},
  year = {1977},
  doi = {10.1016/0010-4809(77)90001-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/891145/},
  note = {Source identifier: 891145}
}