“How did Odessa's fire happen?”. BBC News (4 May 2014). 2020年8月3日閲覧。 “Hardline fans – known as 'ultras' – of both sides agreed to hold a joint march to support a united Ukraine.… Some were veteran supporters of Kiev's Maidan protest movement – the Maidan Self Defence Forces – and/or part of the right-wing Pravy Sektor (Rights Sector).”
