@article{Karpinski72,
  title = {What's Happening With PL/1 Data Base},
  author = {Richard H. Karpinski},
  year = {1972},
  researchr = {https://researchr.org/publication/Karpinski72},
  cites = {0},
  citedby = {0},
  journal = {SIGMOD Record},
  volume = {4},
  number = {3},
  pages = {5},
}