@article{etna_vol54_pp128-149,
  author  = {Sk. Safique Ahmad and Istkhar Ali and Ivan Slapničar},
  title   = {Perturbation analysis of matrices over a quaternion division algebra},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {54},
  year    = {2021},
  pages   = {128--149},
  doi     = {10.1553/etna_vol54s128},
}