title: odefs : a file system interface to an object-oriented database. authors: narain h. gehani , william d. roome , h. v. jagadish. venue: vldb. year: 1994
title: lambda-db : an odmg-based object-oriented dbms. authors: leonidas fegaras , chandrasekhar srinivasan , arvind rajendran , david maier. venue: international conference on management of data. year: 2000