# Combinatory Logic

* [Flattening Combinators: Surviving Without Parentheses]
  by Chris Okasaki (2003) ([DOI])

* [Combinatorial Analysis and Computers]
   by Marshall Hall Jr. and Donald E. Knuth (1965)

[Flattening Combinators: Surviving Without Parentheses]:
    https://web.archive.org/web/20170828181221/http://www.westpoint.edu:80/eecs/SiteAssets/SitePages/Faculty%20Publication%20Documents/Okasaki/jfp03flat.pdf
[DOI]:
    https://doi.org/10.1017/S0956796802004483
[Combinatorial Analysis and Computers]:
     https://web.archive.org/web/20170904072400/http://poncelet.math.nthu.edu.tw/disk5/js/computer/hall-knuth.pdf