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Kukushkin, I. V. and Smet, J. H. and Höppel, L. and Waizmann, U. and Riek, M. and Wegscheider, Werner (2004) Ultrahigh-frequency surface acoustic waves for finite wave-vector spectroscopy of two-dimensional electrons. Applied Physics Letters 85 (19), pp. 2526-2528.
Deruelle, T. and Meurer, B. and Guldner, Y. and Vieren, J. and Riek, M. and Weiss, Dieter and Klitzing, K. v. and Eberl, K. and Ploog, K. (1994) Influence of the depletion length on the commensurability effects in tunable antidots. Physical Review B 49, 16561ff.