@Article{ 
  CapDeNYud15,
  author = { Cappelletti-Montano, Beniamino and De Nicola, Antonio and Yudin, Ivan },
  title = { Hard Lefschetz theorem for Sasakian manifolds },
  journal = { J. Differential Geom. },
  year = { 2015 },
  doi = { 47--66 },
  volume = { 101 },
  number = { 1 },
  pages = {  },
  URL = { https://gecogedi.dimai.unifi.it/paper/184/ },
  note = { cvgmt preprint}
}