Chaos and open orbits in hole-antidot arrays with non-isotropic Fermi surface M. Zitzlsperger, R. Onderka, M. Suhrke, U. Rössler, D. Weiss, W. Wegscheider, M. Bichler, R. Winkler, Y. Hirayama and K. Muraki Europhys. Lett., 61 3 (2003) 382-388 Published online: 01 January 2003 DOI: 10.1209/epl/i2003-00185-0