1890–1906.[dead link] ↑ Philip Longworth, “The Pretender Phenomenon in Eighteenth-Century Russia,” Past & Present 66 (1975): 66–71. ↑ Philip Longworth, “The Pretender Phenomenon in Eighteenth-Century Russia,” Past & Present 66 (1975): 70–77. ↑ Maureen Perrie, “Royal Marks”, Kritika: Explorations in Russian and Eurasian History 11 (2010): 535, 546–49. ↑ Corleonis, Adrian.