How many movies have Carlo Maietto and Stelvio Massi collaborated on?

They have worked on 3 movies together! Their first movie together was Ingrid on the Road (1973) while their highest rated movie together was Il brigadiere Pasquale Zagaria ama la mamma e la polizia (1973). They have not worked together since Five Women for the Killer (1974). They are most known for their crime films together.