[1]	M. Aker et al. Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN. Phys. Rev. Lett., 123(22):221802, 2019. [ bib | DOI | arXiv ]
[2]	K. Altenmüller et al. Gamma-induced background in the KATRIN main spectrometer. Eur. Phys. J., C79(9):807, 2019. [ bib | DOI | arXiv ]