CS600 Learning Materials

http://www.public.asu.edu/~ccolbou/src/355hw1sols09.pdf

http://www.csee.umbc.edu/~squire/cs451_l9.html

Myhill-Nerode Theorem
http://www.cs.odu.edu/~toida/nerzic/390teched/regular/reg-lang/non-regularity.html

http://www.cse.buffalo.edu/~regan/cse396/CSE396MNT.pdf