swisstopo, Istr. Indennità federali, 2016-01-01, p. 3 ([Internet, 2017-02-01](https://www.cadastre.ch/content/cadastre-internet/it/manual-oereb/publication/instruction.download/cadastre-internet/it/documents/oereb-weisungen/Weisung-oereb-kataster-bundesabgeltungen_it.pdf))