Melipticity of the infinite-dimensional iterated laplace operator. I

@article{Bentkus1979MelipticityOT,
  title={Melipticity of the infinite-dimensional iterated laplace operator. I},
  author={V. Yu. Bentkus},
  journal={Lithuanian Mathematical Journal},
  year={1979},
  volume={19},
  pages={454-465}
}