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)