Matts Ahlsen Anders Björnerstedt Stefan Britts Christer Hulten Lars Söderlund An Architecture for Object Management in OIS. 173-196 1984 2 ACM Trans. Inf. Syst. 3 db/journals/tois/tois2.html#AhlsenBBHS84 http://doi.acm.org/10.1145/1206.1207