title: a cost model for clustered object-oriented databases. authors: zhao-hui tang , jean-robert gruser , georges gardarin. venue: vldb. year: 1995
title: metu object-oriented dbms. authors: asuman dogac , budak arpinar , cem evrendilek , cetin ozkan , ilker altintas , ilker durusoy , mehmet altinel , tansel okay , yuksel saygin. venue: international conference on management of data. year: 1994