@article{MeraTarkhanov2022,
  author    = {Azal Jaafar Musa Mera and Nikolai Tarkhanov},
  title     = {An elliptic equation of finite index in a domain},
  journal   = {Boletin de la Sociedad Matem{\´a}tica Mexicana},
  volume    = {28},
  number    = {2},
  doi       = {10.1007/s40590-022-00442-7},
  year      = {2022},
}