@Article{ 
  CaMaMoRi14,
  author = { Catino, Giovanni and Mastrolia, Paolo and Monticelli, Dario Daniele and Rigoli, Marco },
  title = { On the geometry of gradient Einstein-type manifolds },
  journal = { Pac. J. Math. },
  year = { 2017 },
  volume = { 286 },
  number = { 1 },
  pages = { 39-67 },
  URL = { http://cvgmt.sns.it/paper/2358/ },
  note = { cvgmt preprint}
}