<P> In Bosnia and Herzegovina in November 1991, the Bosnian Serbs held a referendum which resulted in an overwhelming vote in favour of forming a Serbian republic within the borders of Bosnia and Herzegovina and staying in a common state with Serbia and Montenegro . On 9 January 1992, the self - proclaimed Bosnian Serb assembly proclaimed a separate "Republic of the Serb people of Bosnia and Herzegovina". The referendum and creation of SARs were proclaimed unconstitutional by the government of Bosnia and Herzegovina and declared illegal and invalid . However, in February--March 1992, the government held a national referendum on Bosnian independence from Yugoslavia . That referendum was in turn declared contrary to the BiH and the Federal constitution by the federal Constitutional Court in Belgrade and the newly established Bosnian Serb government . </P> <P> The referendum was largely boycotted by the Bosnian Serbs . The Federal court in Belgrade did not decide on the matter of the referendum of the Bosnian Serbs . The turnout was somewhere between 64--67% and 98% of the voters voted for independence . It was not clear what the two - thirds majority requirement actually meant and whether it was satisfied . The republic's government declared its independence on 5 April, and the Serbs immediately declared the independence of Republika Srpska . The war in Bosnia followed shortly thereafter . </P> <P> Various dates are considered the end of the Socialist Federal Republic of Yugoslavia: </P> <Ul> <Li> 25 June 1991, when Croatia and Slovenia declared independence </Li> <Li> 8 September 1991, following a referendum the Republic of Macedonia declared independence </Li> <Li> 8 October 1991, when the 9 July moratorium on Slovenian and Croatian secession ended and Croatia restated its independence in the Croatian Parliament (that day is celebrated as Independence Day in Croatia) </Li> <Li> 15 January 1992, when Slovenia and Croatia were internationally recognised by most European countries </Li> <Li> 6 April 1992, full recognition of Bosnia and Herzegovina's independence by the U.S. and most European countries </Li> <Li> 28 April 1992, Federal Republic of Yugoslavia is formed </Li> <Li> 14 December 1995, the Dayton Agreement is signed by the leaders of FR Yugoslavia, Bosnia and Herzegovina, and Croatia </Li> </Ul>

When did yugoslavia changed its name to serbia