@Article{ 
  ConRos18b,
  author = { Conti, Diego and Rossi, Federico A. },
  title = { Ricci-flat and Einstein pseudoriemannian nilmanifolds },
  journal = { Complex Manifolds },
  year = { 2019 },
  doi = { 10.1515/coma-2019-0010 },
  volume = { 6 },
  number = { 1 },
  pages = { 170-193 },
  URL = { https://gecogedi.dimai.unifi.it/paper/313/ },
  note = { cvgmt preprint}
}