Research Papers / Feminism in two novels (The Handmaid's Tale / The Mists of Avalon) [2]

I need to write a research paper comparing/contrasting the element of feminism in Margaret Atwood's The Handmaid's Tale and Marion Zimmer Bradler's The Mists of Avalon and I'm having some trouble finding research material on either subject.

Also, any help regarding how exactly I should get started would be greatly appreciated.

Thank you!