Oleg T. Balovnev Thomas Bode Martin Breunig Armin B. Cremers Wolfgang Müller Gleb Pogodaev Serge S. Shumilov Jörg Siebeck Agemar Siehl Andreas Thomsen The Story of the GeoToolKit - An Object-Oriented Geodatabase Kernel System. 5-47 2004 8 GeoInformatica 1 http://dx.doi.org/10.1023/B:GEIN.0000007723.77851.8f db/journals/geoinformatica/geoinformatica8.html#BalovnevBBCMPSSST04