title: concurrency control in hierarchical multidatabase systems s mehrotra , h korth , a silberschatz vldb j. 1997. authors: nan. venue: nan. year: nan
title: an effective class hierarchy concurrency control technique in object-oriented database systems information and software technology ,. authors: c villena-heinsen , j konig , b von tongelen , ak. venue: nan. year: 1998.0