A. Zaslavsky, Grützmacher, D. A., Lin, S. Y., Smith, T. P., and Sedgwick, T. O., “Valence band Landau level mixing and anisotropy in Si1−xGex investigated by resonant magnetotunneling”, Surface Science, vol. 305, no. 1-3, pp. 307 - 311, 1994. 1994SurfSciv305p307.pdf DOI