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      Pan et al., Phys. Rev. B 91, 041301 (2015)
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      for newer experiments on shot noise (at nu=2/3 instead of 1/3) by
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      the sketch is from)
p. 7: KV thesis (Uni Hamburg, 2005), p. 73
p. 8: van Houten et al. '92 (doi: 10.1088/0268-1242/7/3B/052)
      Kasahara et al. '18 (doi: 10.1038/s41586-018-0274-0)
p. 9: Pan et al., Phys. Rev. Lett. 106, 156806 (2011)
      edge states carry current without dissipation (at temperatures 
      corresponding to energy well below the gap) and they occur not
      only in QHE but also in QAHE, QSHE... See the review of Weng et al. '15
      (doi: 10.1080/00018732.2015.1068524) where the sketch is from

p. 12: Lee et al. '04 (doi: 10.1126/science.1094383)
       Chernyshov et al. '09 (doi: 10.1038/nphys1362)

p. 16: Prati et al. '12 (doi: 10.1088/0957-4484/23/21/215204)