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2. Small homomorphisms of local rings;Avramov;J. Algebra,1978
3. Poincaré series of modules over local rings of small embedding codepth or small linking number;Avramov;J. Algebra,1988
4. Koszul algebras, Veronese subrings, and rings with linear resolutions;Backelin;Rev. Roum. Math. Pures Appl.,1985
5. Cohen–Macaulay Rings;Bruns,1993