Nonsymmorphic symmetry protected hourglass Dirac chain topology and conventional superconductivity in ZrIrGeRemovePavan Kumar Meena, Dibyendu Samanta, Shashank Srivastava, Poulami Manna, Sudeep Kumar Ghosh, and Ravi Prakash SinghPhys. Rev. B 112, 144515 (2025)