@inproceedings{paper77,
  title = "Abstract Scalars, Loops, and Free Traced and Strongly Compact Closed Categories",
  author = "S. Abramsky",
  year = "2005",
  booktitle = "Proceedings of {CALCO} 2005",
  pages = "1-31",
  series = "Springer Lecture Notes in Computer Science",
  volume = "3629",
}