1. https://www.aukcije.hr/prodaja/Antikviteti/Stari-ure%C4%91aji-i-aparati/544/oglas/Zubarska-brusilica-busilica-DENTAL-Potsdam-Germany/5283130

2. https://www.aukcije.hr/prodaja/kolekcionarstvo/ostalo/1090/oglas/Stara-zubarska-busilica-DENTALTECHNIK-701J2-Potsdam-Germany/5483191