TY - CHAP T1 - Towards {D}eclarative {GIS} {A}nalysis Y1 - 1996 A1 - Domenico Aquilino A1 - Chiara Renso A1 - Franco Turini N1 - {\em Proocedings of the {F}ourth {ACM} {W}orkshop on {A}dvances in {G}eographic {I}nformation {S}ystems}, pages. ER -