Assigned papers:
Lolle et al., 2005.
Peng et al., 2006

Also fun but not required:
Comai and Cartwright, 2005
Ray, 2005
Chaudhury, 2005
Mercier et al., 2008

Weigel and Jurgens, 2005
Henikoff, 2005

Useful background:
Krolikowski et al., 2003

You might have more fun if you read the papers first and THEN look at the questions.