[Tutor] Picking up citations

[Paul McGuire]

Dinesh and Kent -

I've been lurking along as you run this problem to ground.  The syntax you
are working on looks very slippery, and reminds me of some of the issues I
had writing a generic street address parser with pyparsing
(http://pyparsing.wikispaces.com/file/view/streetAddressParser.py).  Mailing
list companies spend beaucoup $$$ trying to parse addresses in order to
filter duplicates, to group by zip code, street, neighborhood, etc., and
this citation format looks similarly scary.  

Congratulations on getting to a 95% solution using PLY.

-- Paul