Containment Problems for Polytopes and Spectrahedra. - Kai Kellner; Thorsten Theobald; Christian Trabandt (SIAM J. Optim., 2013)

A Semidefinite Hierarchy for Containment of Spectrahedra. - Kai Kellner; Thorsten Theobald; Christian Trabandt (SIAM J. Optim., 2015)

Sum of Squares Certificates for Containment of H-Polytopes in V-Polytopes. - Kai Kellner; Thorsten Theobald (SIAM J. Discret. Math., 2016)

Irreducible Infeasible Subsystems of Semidefinite Systems. - Kai Kellner; Marc E. Pfetsch; Thorsten Theobald (J. Optim. Theory Appl., 2019)