After Sandra passes out, Steve wraps her limp body in a bed sheet and drags her body out of the house. According to the director's commentary, this is in homage to Norman Bates similarly wrapping Marion Crane's limp body in the shower curtain to dispose of her body.
As Rémi covertly follows Jolène around town, he is wearing a pork pie hat. According to the director's commentary, this is in homage to Popeye Doyle in The French Connection.