X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=blobdiff_plain;f=index.mdwn;h=e2f7f399ec410709517b577aeb8a6b7605a0cb05;hp=26ae09cf756fad2bd4b8a16e843f82eb315ca0b3;hb=4380b5f17428692754b630209ed9f06b7f549fd6;hpb=dc9298c6718ec9bc63550ec6bc6b5a187f235e50

diff --git a/index.mdwn b/index.mdwn
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+++ b/index.mdwn
@@ -62,6 +62,7 @@ very much worthwhile (and very much appreciated) if you would explain
 what is difficult, what you tried, why what you tried didn't work, and
 what you think you need in order to solve the problem.
 
+##[[Lambda Evaluator]]##
 
 ## Lecture Notes and Assignments ##
 
@@ -237,15 +238,16 @@ It's not necessary to purchase these for the class. But they are good ways to ge
 
 *	*An Introduction to Lambda Calculi for Computer Scientists*, by Chris
 Hankin, currently $17 on
-[Amazon](http://www.amazon.com/Introduction-Lambda-Calculi-Computer-Scientists/dp/0954300653).
+[Amazon](http://www.amazon.com/dp/0954300653).
 
 *	(Another good book covering the same ground as the Hankin book, but
 more thoroughly, and in a more mathematical style, is *Lambda-Calculus and Combinators:
-an Introduction*, by J. Roger Hindley and Jonathan P. Seldin. If you choose to read
+an Introduction*, by J. Roger Hindley and Jonathan P. Seldin, currently $52 on [Amazon](http://www.amazon.com/dp/0521898854). If you choose to read
 both the Hankin book and this book, you'll notice the authors made some different
 terminological/notational choices. At first, this makes comprehension slightly slower,
 but in the long run it's helpful because it makes the arbitrariness of those choices more salient.)
 
+*	(Another good book, covering some of the same ground as the previous two, but also delving much deeper into typed lambda calculi, is *Types and Programming Languages*, by Benjamin Pierce, currently $61 on [Amazon](http://www.amazon.com/dp/0262162091). This book has many examples in OCaml.)
 
 *   *The Little Schemer, Fourth Edition*, by Daniel P. Friedman and Matthias
 Felleisen, currently $23 on [Amazon](http://www.amazon.com/exec/obidos/ASIN/0262560992).