1. W. Bishop, A theory of multiplicity for multiplicative filtrations, PhD dissertation, Western Michigan University, Kalamazoo, MI, 1971
2. Equimultiplicity and Blowing Up, an Algebraic Study;Herrmann,1988
3. Local Rings;Nagata,1962
4. A note on reductions of ideals with an application to the generalized Hilbert function;Northcott;Proc. Cambridge Philos. Soc.,1954
5. On quasi-unmixed local domains, the altitude formula, and the chain condition for prime ideals (I);Ratliff;Amer. J. Math.,1969