http://dl.acm.org/citation.cfm?id=318852 Andrea H. Skarra Stanley B. Zdonik Steven P. Reiss An Object Server for an Object-Oriented Database System. 196-204 OODBS1986/P196.pdf 1986 conf/oodbs/86 OODBS db/conf/oodbs/oodbs86.html#SkarraZR86