@book{19903,
	author = {Lam, Tsit-Yuen},
	title = {Modules with isomorphic multiples and rings with isomorphic matrix rings; a survey},
	publisher = {L'Enseignement Mathematique,},
	year = {1999},
	series = {Monographie De L'Enseignement Mathematique},
	address = {Geneva:}
}