A semantic method of automatic composition of e-government servicesMaigre, Riina; Grigorenko, Pavel; Haav, Hele-Mai; Kalja, AhtoDatabases and information systems : tenth international Baltic conference on databases and information systems : local proceedings, materials of doctoral consortium : Vilnius, Lithuania, July 8-11, 20122012 / p. 182

Applying user domain model to improve Web recommendationsRobal, Tarmo; Kalja, AhtoDatabases and information systems : tenth international Baltic conference on databases and information systems : local proceedings, materials of doctoral consortium : Vilnius, Lithuania, July 8-11, 20122012 / p. 182

Communication channel choice between enterprises and governmentKindel, Kristiina; Venesaar, Urve; Reidolf, MerliDatabases and information systems : tenth international Baltic conference on databases and information systems : local proceedings, materials of doctoral consortium : Vilnius, Lithuania, July 8-11, 20122012 / p. 182-183 https://www.researchgate.net/publication/288761200_Communication_channel_choice_between_enterprises_and_government

On proving the concept of an ontology aided software refactoring toolPõld, Janari; Robal, Tarmo; Kalja, AhtoDatabases and information systems : tenth international Baltic conference on databases and information systems : local proceedings, materials of doctoral consortium : Vilnius, Lithuania, July 8-11, 20122012 / p. 179 https://www.researchgate.net/publication/287294774_On_proving_the_concept_of_an_ontology_aided_software_refactoring_tool

Processing multiple databases in the Estonian water information systemViies, Vladimir; Ennet, Peeter; Aigro, Jaan; Kinks, Hannes; Kullamaa, Robert; Ozolit, Ott Madis; Salula, AinDatabases and Information Systems : tenth International Baltic Conference on Databases and Information Systems : local proceedings, materials of doctoral consortium : Vilnius, Lithuania, July 8-11, 20122012 / p. 29-36 : ill