Wiese, Andreas Algorithms and Complexity, MPI for Informatics, Max Planck Society;
Kurpisz, A., Mastrolilli, M., Mathieu, C., Mömke, T., Verdugo, V., & Wiese, A. (2016). Semidefinite and Linear Programming Integrality Gaps for Scheduling Identical Machines. In Q. Louveaux, & M. Skutella (Eds.), Integer Programming and Combinatorial Optimization (pp. 152-163). Berlin: Springer. doi:10.1007/978-3-319-33461-5_13.