@article{FedchenkoTarkhanov2015,
  author    = {Dmitri Fedchenko and Nikolai Nikolaevich Tarkhanov},
  title     = {An index formula for Toeplitz operators},
  journal   = {Complex variables and elliptic equations},
  volume    = {60},
  number    = {12},
  pages     = {1764 -- 1787},
  doi       = {10.1080/17476933.2015.1050007},
  year      = {2015},
}