I used these resources when researching the annotations for this fairy tale. Most should be available through your local library, but I have included links to the titles on Amazon.com for further reading.
Ivanits, Linda J. Russian Folk Belief. Armonk, New York: M.E. Sharpe, 1989.
Amazon.com: Buy the book inhardcoverorpaperback.
Pilinovsky, Helen J. "By Any Other Name: An Overview of the Russian Fairy Tale in the Fantastic Tradition of the East and West." Endicott Studio Journal of Mythic Arts. Winter 2004.
URL: (no external link available at this time)