Representation

1

Gilberto Camara, Marco Antonio Casanova, Ubirajara Moura De Freitas, Joao Pedro Cerveira Cordeiro, and Lauro Hara. A presentation language for GIS cadastral data. In ACM GIS, 1996.

2

I.F. Cruz, A.O. Mendelzon, , and P.T. Wood. A graphical query language supporting reursion. In SIGOD, 1987.

3

Ralf Hartmut Guting and Markus Schneider. Realms: A Foundation for Spatial Data Types in Database Systems. In SSD, 1993.

4

B.C. Ooi, R. Sacks-Davis, and K.J. Mcdonell. Extending a DBMS for geographic applications. In Data Engineering, 1989.