- A
few pages from "Intro to Commutative ..." by Kunz

- "Initial Results in the theory of
linear algebraic groups" by Rosenlicht

- "Notes on difference equations" by
Singer (the prequil to "Galois Theory of Difference Equations")

- "Solving difference equations in finite terms" by Hendriks and Singer
- "An Algorithm for determining the difference Galois group of second order difference equations""by Hendriks
- "Quantum Automata and Algebraic Groups" by Derksen et al
- "Hypergeometric solutions of
linear recurrences with polynomial coefficients"by Petkovsek

and here(version of July 27, 2012) are the lecture notes for the course and some answers to problems and corrections to previous versions.