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Find below a few references:
E. D. Andersen and K. D. Andersen, Presolving in linear programming, Math. Programming 71(2):221--245, 1995 C. Mészáros and U.H. Suhl, Advanced preprocessing techniques for linear and quadratic programming, OR Spectrum, 25(4), Springer, 2003, 575-595 Jacek, Gondzio, Presolve Analysis of Linear Programs Prior to Applying an Interior Point Method, Logilab, HEC Geneva, Section of Management Studies, University of Geneva, 102 Bd Carl Vogt, CH-1211 Geneva 4, Switzerland Technical Report 1994.3 February 7, 1994, revised December 20, 1994 http://blogs.unige.ch/hec/logilab/template/papiers/papier64presolve.ps.
The COIN-OR Manual (Section 3.4, search for “Reference”) has some references on preprocessing techniques for mixed-integer problems.