Marc Friedman Alon Y. Levy Todd D. Millstein Navigational Plans for Data Integration. 1999 conf/ijcai/1999iii Intelligent Information Integration http://SunSITE.Informatik.RWTH-Aachen.DE/Publications/CEUR-WS/Vol-23/friedman-ijcai99-iii.ps db/conf/ijcai/ijcai99iii.html#FriedmanLM99