@Article{ 
  MosPas21,
  author = { Moscariello, Gioconda and Pascale, Giulio },
  title = { Second Order Regularity for a Linear Elliptic System Having BMO Coefficients },
  journal = { Milan J. Math. },
  year = { 2021 },
  doi = { 10.1007/s00032-021-00345-8 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5948/ },
  note = { cvgmt preprint}
}