Anonymous, Democracy with a small "d" (1962)
Le Grand E. Day, The Theory of Multigovernment (1969-1977)
John Gall, Systemantics (1975)
Yves Plasseraud, Choose Your Own Nationality (2000)
Bruno S. Frey, A Utopia? Government without Territorial Monopoly (2001)
Arnold Kling, Exit, Voice, and Freedom: An Example (2009)