@techreport{TR-DCC-95-08,
  number = {DCC-95-08},
  author = {de Oliveira, Juliano L. and Medeiros, Claudia M. B.},
  title = {A Direct Manipulation User Interface for Querying Geographic Databases},
  month = {June},
  year = {1995}, 
  institution = {Department of Computer Science, University of Campinas},
  note = {In English, 15 pages.
    \par\selectlanguage{english}\textbf{Abstract}
      This paper presents an architecture for a direct manipulation user
      interface for browsing and querying geographic data.  This
      interface provides users with a high level object oriented
      conceptual view of the underlying database, independent of the
      database's native data model.  It lets users manipulate different
      representations of a single georeferenced entity, thereby adding a
      new degree of flexibility to querying facilities.
  }
}