title: towards a theory of cost management for digital libraries and electronic commerce. authors: a. prasad sistla , robert h. sloan , yelena yesha , ouri wolfson. venue: acm trans . database syst .. year: 1998
title: towards a theory of cost management for digital libraries and electronic commerce. authors: a. prasad sistla , ouri wolfson , yelena yesha , robert sloan. venue: acm transactions on database systems ( tods ). year: 1998