Non-commutative Lorentz symmetry and the origin of the Seiberg–Witten mapA.A. Bichl, J.M. Grimstrup, H. Grosse, E. Kraus, L. Popp, M. Schweda and R. WulkenhaarEur. Phys. J. C, 24 1 (2002) 165-176DOI: https://doi.org/10.1007/s100520100857