title: engineering federated information systems : report of efis '99 workshop sigmod record 1999. authors: fèlix saltor , uwe hohenstein , ralf-detlef kutsche , wilhelm hasselbring , gunter saake , stefan conrad , mark roantree. venue: nan. year: nan
title: research issues in federated database systems : report of efdbs '97 workshop 1997. authors: s. conrad , b. eaglestone , w. hasselbring , m. roantree , m. sch &#246; hoff , m. str &#228; ssler , m. vermeer , f. saltor. venue: acm sigmod record. year: nan