F. Niephaus, T. Felgentreff, and R. Hirschfeld. Proceedings of the 13th Workshop on Implementation, Compilation, Optimization of Object-Oriented Languages, Programs and Systems, page 30--35. ACM, (July 2018)
D. Röthlisberger, M. Denker, and É. Tanter. Computer Languages, Systems & Structures, 34 (2–3):
46 - 65(2008)Best Papers 2006 International Smalltalk Conference.