1. Twelve associated points in [5];Babbage;J. London Math. Soc.,1948
2. Ten associated points and quartic and quintic curves in [4];Bath;J. London Math. Soc.,1938
3. D. Bayer, and, M. Stillman, Macaulay: A system for computation in algebraic geometry and commutative algebra. [source and object code available for Unix and Macintosh computers: Contact the authors or download from, ftp://math.harvard.edu/macaulay, via anonymous ftp.]
4. Cohen–Macaulay rings;Bruns,1993
5. Algebra structures for finite free resolutions, and some structure theorems for ideals of codimension 3;Buchsbaum;Amer. J. Math.,1977