@book{do-b-05.04.03-sppi-IT, school = {BFS}, month = {Apr}, language = {DE/FR}, title = {Erhebungsformular SPPI - IT}, institution = {Bundesamt für Statistik (BFS)}, number = {22364046}, url = {https://dam-api.bfs.admin.ch/hub/api/dam/assets/22364046/master} }