@techreport{GleixnerWeltge2013, author = {Ambros Gleixner and Stefan Weltge}, title = {Learning and Propagating Lagrangian Variable Bounds for Mixed-Integer Nonlinear Programming}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {13-04}, language = {eng}, year = {2013} }