title: garbage collection in object-oriented databases using transactional cyclic reference counting. authors: s. sudarshan , prasan roy , abraham silberschatz , srinivas ashwin , s. seshadri. venue: vldb j.. year: 1998
title: a logical foundation for deductive object-oriented databases. authors: mengchi liu , gillian dobbie , tok wang ling. venue: acm transactions on database systems ( tods ). year: 2002