SOS: An Object-Oriented Operating System - Assessment and Perspectives. - Marc Shapiro 001; Yvon Gourbant; Sabine Habert; Laurence Mosseri; Michel Ruffin; Celine Valot (Comput. Syst., 1989)

COOL: Kernel Support for Object-Oriented Environments. - Sabine Habert; Vadim Abrossimov (OOPSLA/ECOOP, 1990)