title: the microsoft database research group. authors: roger s. barga , david b. lomet , per-åke larson , surajit chaudhuri , vivek r. narasayya. venue: sigmod record. year: 1998
title: the database research group at eth zurich. authors: moira c. norrie , stephen m. blott , hans-j &#246; rg schek , gerhard weikum. venue: acm sigmod record. year: 1994