Program Evolution and Its Impact on Software Engineering

@inproceedings{Lehman-Parr:ICSE76,
  author    = {M. M. Lehman and
               F. N. Parr},
  title     = {Program Evolution and Its Impact on Software Engineering},
  booktitle = {ICSE},
  pages     = {350--357},
  publisher = {{IEEE} Computer Society},
  year      = {1976},
}