io-port 05514715 Hjelmager, Jan;
Moellering, Harold;
Cooper, Antony;
Delgado, Tatiana;
Rajabifard, Abbas;
Rapant, Petr;
Danko, David;
Huet, Michel;
Laurent, Dominique;
Aalders, Henri;
Iwaniak, Adam;
Abad, Paloma;
Düren, Ulrich;
Martynenko, Alexander
An initial formal model for spatial data infrastructures. (English)
Int. J. Geogr. Inf. Syst. 22, No. 11-12, 1295-1309 (2008).