Yariv Aridor Shimon Cohen Amiram Yehudai SYMPAL: a software environment for implicit concurrent object-oriented programming. 53-81 1997 4 Object Oriented Systems http://www.dcs.kcl.ac.uk/staff/russel/CompSciNet/OO/oo040103.abs.html db/journals/oos/oos4.html#AridorCY97