Fast integer-valued algorithms for optimal allocations under constraints in stratified sampling. - Ulf Friedrich; Ralf T. Münnich; Sven de Vries; Matthias Wagner 002 (Comput. Stat. Data Anal., 2015)

Geometry of gross substitutes valuations. - Sven de Vries; Ulf Friedrich; Stephen Raach (Discret. Appl. Math., 2020)

An extended formulation for the 1-wheel inequalities of the stable set polytope. - Sven de Vries; Ulf Friedrich; Bernd Perscheid (Networks, 2020)

Computing Optimized Path Integrals for Knapsack Feasibility. - Endric Daues; Ulf Friedrich (INFORMS J. Comput., 2022)

Recognizing integrality of weighted rectangles partitions. - Paul Deuker; Ulf Friedrich (J. Comb. Optim., 2025)