<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Thanks. I've updated the Wikipedia article accordingly.<div><br><div><div>On Mar 9, 2011, at 9:40 AM, Robby Findler wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">This is the paper that first introduced the idea:<br><br> Contracts for Higher-Order Functions<br> Findler, Felleisen<br> International Conference on Functional Programming (ICFP) 48-59 2002<br> <a href="http://www.eecs.northwestern.edu/~robby/pubs/papers/ho-contracts-icfp2002.pdf">http://www.eecs.northwestern.edu/~robby/pubs/papers/ho-contracts-icfp2002.pdf</a><br><br>Robby<br></span></blockquote></div><br></div></body></html>