Getting to know you: open source development meets usability. - Nancy J. Frishberg; Anna Marie Dirks; Calum Benson; Seth Nickell; Suzanna Smith (CHI Extended Abstracts, 2002)

Professional usability in open source projects: GNOME, OpenOffice.org, NetBeans. - Calum Benson; Matthias Müller-Prove; Jiri Mzourek (CHI Extended Abstracts, 2004)