Nested Relations, a Step Forward or Backward?

Hans-Jörg Schek. Nested Relations, a Step Forward or Backward?. IEEE Data Eng. Bull., 11(3):56-63, 1988. [doi]

@article{Schek88,
  title = {Nested Relations, a Step Forward or Backward?},
  author = {Hans-Jörg Schek},
  year = {1988},
  url = {http://sites.computer.org/debull/88SEP-CD.pdf},
  researchr = {https://researchr.org/publication/Schek88},
  cites = {0},
  citedby = {0},
  journal = {IEEE Data Eng. Bull.},
  volume = {11},
  number = {3},
  pages = {56-63},
}