@book{1101973,
	author = {Рансимен, С.},
	title = {История Первого Болгарского царства},
	publisher = {Евразия},
	year = {2009},
	series = {Clio},
	address = {Санкт-Петербург},
	note = {Пер. изд.: A history of the first bulgarian empire / S. Runciman. London: G. Bell & Sons Ltd., 1930}
}