The evolution of APL

@article{Falkoff1978TheEO,
  title={The evolution of APL},
  author={Adin D. Falkoff and Kenneth E. Iverson},
  journal={ACM SIGPLAN Notices},
  year={1978},
  volume={13},
  pages={47-57}
}
This paper is a discussion of the evolution of the APL language, and it treats implementations and applications only to the extent that they appear to have exercised a major influence on that evolution. Other sources of historical information are cited in References 1-3; in particular, The Design of APL [1] provides supplementary detail on the reasons behind many of the design decisions made in the development of the language. Readers requiring background on the current definition of the… 
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