Preprints:
"A Speed-up for Helsgaun's TSP Heuristic by Relaxing the Positive Gain Criterion" with Sabrina Ammann, Sebastian Stiller and Timo de Wolff [arXiv]
"Revealing Hidden Physical Nonclassicality with Nonnegative Polynomials" with Ties-A. Ohst, Benjamin Yadin, Timo de Wolff, Otfried Gühne and Hai-Chau Nguyen [arXiv]