@book{53821,
	author = {Efremova, Tat΄âna Fedorovna and Kostomarov, Vitalij Grigor΄evič},
	title = {Словарь грамматических трудностей русского языка},
	publisher = {AST, Astrel΄, Hranitel΄},
	year = {2007},
	address = {Moskva}
}