Presolving Linear Bilevel Optimization Problems (2021) Kleinert T, Manns J, Schmidt M, Weninger D Journal article, Review article A Survey on Mixed-Integer Programming Techniques in Bilevel Optimization (2021) Kleinert T, Labbe M, Ljubic I, Schmidt M Journal article Two-row and two-column mixed-integer presolve using hashing-based pairing methods (2020) Gemander P, Chen WK, Weninger D, Gottwald L, Gleixner A, Martin A Journal article Complementarity-based nonlinear programming techniques for optimal mixing in gas networks (2019) Hante F, Schmidt M Journal article An interior-point method for nonlinear optimization problems with locatable and separable nonsmoothness (2015) Schmidt M Journal article, Original article