@article{LyTarkhanov2015,
  author    = {Ibrahim Ly and Nikolai Nikolaevich Tarkhanov},
  title     = {Generalized Beltrami equations},
  journal   = {Complex variables and elliptic equations},
  volume    = {60},
  number    = {1},
  pages     = {24 -- 37},
  doi       = {10.1080/17476933.2013.876759},
  year      = {2015},
}