Distance-preserving graph contractions. - Karl Däubel; Yann Disser; Max Klimm; Torsten Mütze; Frieder Smolny (CoRR, 2017)

On Orthogonal Symmetric Chain Decompositions. - Karl Däubel; Sven Jäger 001; Torsten Mütze; Manfred Scheucher (Electron. J. Comb., 2019)

Distance-Preserving Graph Contractions. - Aaron Bernstein; Karl Däubel; Yann Disser; Max Klimm; Torsten Mütze; Frieder Smolny (SIAM J. Discret. Math., 2019)

An Improved Upper Bound for the Ring Loading Problem. - Karl Däubel (SIAM J. Discret. Math., 2022)