The article talks about the history of superheroes. It talks about the evolution of superheroes from comics into blockbusters. Good for background information and history of superheroes.

http://heinonline.org/HOL/LandingPage?handle=hein.journals/windyrbaj20&div=11&id=&page=

This article discusses law and how it is portrayed in film. There is a section that talks specifically about law and its portrayal in superhero movies.

This article is a look at children's cartoons, primarily superhero cartoons, and how they have changed and stayed the same over the past 20 years. It specifically looks at gender roles in the cartoons. Good article for research question focused on gender roles in superhero movies.