@article{NekrasovaTsirlinColmontetal.2020,
  author    = {Diana O. Nekrasova and Alexander A. Tsirlin and Marie Colmont and Oleg Siidra and Herv{\´e} Vezin and Olivier Mentr{\´e}},
  title     = {Magnetic hexamers interacting in layers in the (Na,K)2Cu3O(SO4)3 minerals},
  journal   = {Physical Review B},
  volume    = {102},
  number    = {18},
  pages     = {184405},
  doi       = {10.1103/physrevb.102.184405},
  year      = {2020},
}