Where can I find criticism on Brutus in Julius Caesar?

In my english cl, we just finished read the play Julius Caesar. My teacher wants us to download criticism on the tragic hero, Brutus. On my school website, under the library link we can easily download an article of criticism on Brutus, but the site has been down for the past week, and it still is today. I will be checking the site to see if it works, but i need an alternative in case it doesn't. I've checked numerous sites for the criticism, but i have to pay for the full piece of work. Would anyone know where i can find criticism on Brutus, for free? i have to write an essay based on it.