Elizabeth F. Emens, Monogamy’s Law: Compulsory Monogamy and Polyamorous Existence in the current issue of New York University Review of Law and Social Change
Stanley Kurtz at the National Review is foaming at the mouth about it. It sounds very interesting, and I’d love to read it.
Edit: Never mind! It’s at http://www.law.uchicago.edu/academics/publiclaw/resources/58-monogamy.pdf
Edited to add new link: https://scholarship.law.columbia.edu/faculty_scholarship/1306/