Anisotropic Zeeman shift in p-type GaAs quantum point contacts Y. Komijani, M. Csontos, I. Shorubalko, U. Zülicke, T. Ihn, K. Ensslin, D. Reuter and A. D. Wieck EPL, 102 3 (2013) 37002 Published online: 14 May 2013 DOI: 10.1209/0295-5075/102/37002