MathSciNet bibliographic data MR1425112 (98d:58175) 58G12 (57R20 58G05) Block, Jonathan; Mathai, Varghese; Weinberger, Shmuel Homotopy invariance of Novikov-Shubin invariants and \$L\sp 2\$$L\sp 2$ Betti numbers. Proc. Amer. Math. Soc. 125 (1997), no. 12, 3757–3762. Article

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