title: the aggregate data problem : a system for their definition and management sigmod record. authors: leonardo tininini , antonia bezenchek , maurizio rafanelli. venue: nan. year: 1996.0
title: the aggregate data problem : a system for their definition and management m. rafanelli , a. bezenchek , l. tininini 1996. authors: nan. venue: acm sigmod record. year: nan