@book{30035,
	author = {Iпtегпаtiопаl Congress of Mathematicians (1980: Helsinki, Fiпlапd) and Makanin, Gennadiy Semenovich},
	title = {Eight lectures delivered at the international congress of mathematicians in Helsinki},
	publisher = {American Mathematical Society},
	year = {1981},
	series = {American Mathematical Society trапslаtiопs},
	address = {Providence, Rhode Island},
	note = {Tranlation from Russian}
}