title: metu interoperable database system. authors: ebru kilic , pinar koksal , cem evrendilek , ugur halici , sema mancuhan , n. kesim , asuman dogac , cevdet dengi , sena nural , gökhan özhan , fatma ozcan , ismailcem budak arpinar. venue: sigmod record. year: 1995
title: probview : a flexible probabilistic database system. authors: laks v. s. lakshmanan , nicola leone , robert ross , v. s. subrahmanian. venue: acm transactions on database systems ( tods ). year: 1997