@techreport{GleixnerSteffyWolter2012, author = {Ambros Gleixner and Daniel Steffy and Kati Wolter}, title = {Improving the Accuracy of Linear Programming Solvers with Iterative Refinement}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {12-19}, language = {eng}, year = {2012} }