The markets will be watching important developments in Europe this week along with earnings reports from major U.S. companies. On Monday, investors will be parsing results from Sunday's constitutional referendum in Italy. If citizens vote to reject the proposed reforms, Italy's prime minister may resign. On Tuesday, Autozone (AZO) , Dave & Buster's Entertainment (PLAY - Get Report) and Toll Brothers (TOL - Get Report) report earnings. On Wednesday, Brown Forman (BF.B - Get Report) , Costco (COST - Get Report) and Lululemon Athletica (LULU - Get Report) release earnings. On Thursday, Hovnanian Enterprises (HOV - Get Report) and Restoration Hardware (RH - Get Report) release earnings. Also on Thursday, the European Central Bank holds its December policy meeting - investors await any possible changes to the central bank's current pace of monetary policy. TheStreet's Scott Gamm reports from Wall Street.