Iron Man 3 tops 2013 global box office as sequels and reboots dominate, The Independent

Eight of the top 10 financial sucesses of last year picked up on previous films

Boxoffice® Pro - April 2013

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Iron Man 3' blows away the box office with $175 million opening weekend - The Verge

Iron Man (film), Paramount Global Wiki

Iron Man 3 storms box office with US yet to come, Iron Man 3

Marvel's Phase 3: 'Doctor Strange,' 'Iron Man 4,' 'Hulk,' 'Inhumans'?

Box Office: 'Top Gun: Maverick' Bows To Memorial Day Record With $156M

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DCEU box office adjusted for inflation : r/DC_Cinematic

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Man of Steel (film) - Wikipedia

James Cameron Says 'Man Of Steel' & 'Iron Man 3' Probably Didn't Have To Be In 3D – IndieWire

Iron Man 3,' 'Fast 6' Dominate Malaysia Box Office in 2013

Even superheroes may not be able to save Hollywood's desperate summer, Film industry