Tamara Denning Michael Kelly David Lindquist Roshni Malani William G. Griswold Beth Simon Lightweight preliminary peer review: does in-class peer review make sense? 266-270 2007 conf/sigcse/2007 SIGCSE http://doi.acm.org/10.1145/1227310.1227406 db/conf/sigcse/sigcse2007.html#DenningKLMGS07