MathSciNet bibliographic data MR1985907 (2004f:57031) 57N70 (57M15 57N10) Massuyeau, Gwénaël; Meilhan, Jean-Baptiste Characterization of \$Y\sb 2\$$Y\sb 2$-equivalence for homology cylinders. J. Knot Theory Ramifications 12 (2003), no. 4, 493–522. Article

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