PDL: a tool for software design

@inproceedings{Caine1975PDLAT,
  title={PDL: a tool for software design},
  author={Stephen H. Caine and E. Kent Gordon},
  booktitle={AFIPS '75},
  year={1975}
}
During the past several years, industry has seen an explosion in the cost of software production coupled with a decline in the quality and reliability of the results. A realization that structured programming, top-down design, and other changes in techniques can help has alerted the field to the importance of applying advanced design and programming methods to software production.