Lian Wen, David Tuffley, Terry Rout. Using Composition Trees to Model and Compare Software Process. In Rory V. O'Connor, Terry Rout, Fergal McCaffery, Alec Dorling, editors, Software Process Improvement and Capability Determination - 11th International Conference, SPICE 2011, Dublin, Ireland, May 30 - June 1, 2011. Proceedings. Volume 155 of Communications in Computer and Information Science, pages 1-15, Springer, 2011.