Creating Printable Documents With Ruby
PDF:Writer tutorial
Adobe: ToUnicode Mapping File Tutorial
Scanning and OCR with Acrobat 8 | LLRX.com
Beamer v3.0 Guide
Very comprehensive beamer reference
FPDF: Tables
Jim King from Adobe Systems Incorporated PDF Tutorials
Using PDF::API2 - The Code
tutorial to one of the more popular PDF generation libs for perl
Jump Start Credit Card Processing: How it works, what you need, with ...
Chapter 5: Getting Text Out of an Image-Only PDF