Pylyp Orlyk Constitution, European commission for democracy through law (Venice Commission) The Constitutional Heritage of Europe. Montpellier, 22–23 Novembro 1996.
Payne, Stanley G.. (1973) A History of Spain and Portugal: Eighteenth Century to Franco2. Madison: University of Wisconsin Press, p. 432–433. ISBN 978-0-299-06270-5. “The Spanish pattern of conspiracy and revolt by liberal army officers ... was emulated in both Portugal and Italy. In the wake of Riego's successful rebellion, the first and only pronunciamiento in Italian history was carried out by liberal officers in the kingdom of the Two Sicilies. The Spanish-style military conspiracy also helped to inspire the beginning of the Russian revolutionary movement with the revolt of the Decembrist army officers in 1825. Italian liberalism in 1820–1821 relied on junior officers and the provincial middle classes, essentially the same social base as in Spain. It even used a Hispanized political vocabulary, for it was led by giunte (juntas), appointed local capi politici (jefes políticos), used the terms of liberali and servili (emulating the Spanish word serviles applied to supporters of absolutism), and in the end talked of resisting by means of a guerrilla. For both Portuguese and Italian liberals of these years, the Spanish constitution of 1812 remained the standard document of reference.”.
