Ginsburg, Tom and Rodriguez, Daniel B. and Weingast, Barry R., The Functions of Constitutional Monarchy: Why Kings and Queens Survive in a World of Republics (May 21, 2023). Northwestern Public Law Research Paper No. 23-29, U of Chicago, Public Law Working Paper No. 831, Available at SSRN: https://ssrn.com/abstract=4454620 or http://dx.doi.org/10.2139/ssrn.4454620
"The Hittites", smie.co, 12 September 2008, archived from the original on 20 October 2017, retrieved 21 November 2015
ssrn.com
Ginsburg, Tom and Rodriguez, Daniel B. and Weingast, Barry R., The Functions of Constitutional Monarchy: Why Kings and Queens Survive in a World of Republics (May 21, 2023). Northwestern Public Law Research Paper No. 23-29, U of Chicago, Public Law Working Paper No. 831, Available at SSRN: https://ssrn.com/abstract=4454620 or http://dx.doi.org/10.2139/ssrn.4454620
Blum, Cameron & Barnes 1970, pp. 2Nnk67–268. Blum, Jerome; Cameron, Rondo; Barnes, Thomas G. (1970), The European World, vol. 1, Boston: Little, Brown, pp. 267–268, OCLC76819