title: engineering federated information systems : report of efis '99 workshop. authors: fèlix saltor , uwe hohenstein , ralf-detlef kutsche , wilhelm hasselbring , gunter saake , stefan conrad , mark roantree. venue: sigmod record. year: 1999
title: engineering federated information systems : report of eefis '99 workshop. authors: s. conrad , w. hasselbring , u. hohenstein , r.-d . kutsche , m. roantree , g. saake , f. saltor. venue: acm sigmod record. year: 1999