(a) Landau levels in CuPt-ordered InAs_0.5Sb_0.5 with a magnetic field of 50 T applied parallel to the C₃ axis using the k · p -model of Eq. (9) and (b) those in ZrT with a magnetic field of 20 T applied parallel to the C₃ axis using the k · p -model of Eq. (3). The dashed red lines show the bulk bands. Figure adapted from Refs. [20] and [21].