Algorithmic aspects of sums of Hermitian squares of noncommutative polynomials. - Sabine Burgdorf; Kristijan Cafuta; Igor Klep; Janez Povh (Comput. Optim. Appl., 2013)

The tracial moment problem and trace-optimization of polynomials. - Sabine Burgdorf; Kristijan Cafuta; Igor Klep; Janez Povh (Math. Program., 2013)

On the Closure of the Completely Positive Semidefinite Cone and Linear Approximations to Quantum Colorings. - Sabine Burgdorf; Monique Laurent; Teresa Piovesan (TQC, 2015)