• Co-operation in the field of information securityTepandi, JaakInformation technology in public administration of Estonia : yearbook 20072008 / p. 16-18
  • Information security interoperability framework, version 2Tepandi, JaakEstonian information society yearbook 2011/20122012 / p. 46-47
  • Ontologies and semantic annotation of X-road servicesHaav, Hele-MaiEstonian information society yearbook 2011/20122012 / p. 81-83
  • Open data repositoryVallner, Uuno; Tammet, Tanel; Reitsakas, AleksanderEstonian information society yearbook 2011/20122012 / p. 18-21 : ill
  • The first ten years of X-roadKalja, AhtoEstonian information society yearbook 2011/20122012 / p. 78-80
  • The X-road : a key interoperability component within the state information systemKalja, AhtoInformation technology in public administration of Estonia : yearbook 20072008 / p. 19-22
  • X-road - one of the cornerstones of the state information systemKalja, AhtoInformation technology in public administration of Estonia : yearbook 20062007 / p. 35-43