Note Pagina 14

• Sulle limitazioni imposte da Google agli adblocker:
  https://www.forbes.com/sites/kateoflahertyuk/2019/05/30/google-just-gave-2-billion-chrome-users-a-reason-to-switch-to-firefox/
  e https://9to5google.com/2019/05/29/chrome-ad-blocking-enterprise-manifest-v3/
• I documenti originali presentati all'Autorità di vigilanza (la US Securities and Exchange Commission - SEC):
  https://www.sec.gov/Archives/edgar/data/1652044/000165204419000004/goog10-kq42018.htm#sB8A92C82A7085B27A37F412D2216BC6F