@article{LyTarkhanov2009,
  author    = {Ibrahim Ly and Nikolai Nikolaevich Tarkhanov},
  title     = {A variational approach to the Cauchy problem for nonlinear elliptic differential equations},
  doi       = {10.1515/Jiip.2009.037},
  url       = {http://dx.doi.org/10.1515/jiip},
  year      = {2009},
}